Close this search box.


10 Best Engine Degreasers In 2024

“Revitalize your vehicles by removing stubborn gunk, grease, grime, and road debris with one of these Best Engine Degreasers on the market.”

Do you ever wonder what that greasy grime on your engine is? It’s built-up oil, dirt, and grime that can affect performance. Engine degreasers are designed to break down these contaminants, making them easier to clean off. They’re handy for regular maintenance or before a thorough cleaning, and some degreasers are safe for certain engine parts!

Here are few key factors to consider while buying:

  • Multi-Surface Cleaning: Our chosen degreasers are versatile, able to clean various surfaces in the engine bay, not just the engine. This flexibility means users can clean the whole area without needing multiple products.
  • Scent or Fragrance: We understand the importance of a pleasant workspace, so we offer products with either a neutral scent or mild fragrances. This helps avoid the strong chemical odors often found in degreasers.
  • Type of Engine Degreaser: We offer both water-based and solvent-based degreasers. Water-based ones are eco-friendly and suitable for lighter grime, while solvent-based ones are better for heavy grease and oil buildup.

This article presents leading engine degreasers, evaluating their advantages and drawbacks, alongside a “Buying Guide” with expert advice.

Roundup of the Top 10 Picks!

Best Engine Degreasers Table

Best Engine DegreaserFormScentVolumeSurface RecommendationBuy Now
Oil Eater Engine DegreaserLiquidLemon1 Gallon (128 Oz)Floors & Walls, Driveways, Grills & Exhausts, Patios & Boats, Automotive Wheels, Parts & Equipment, Carpet Stains, Tiles, & Outdoor FurnitureCheck On Amazon
Chemical Guys Engine DegreaserLiquidCitrus (Fresh Orange)16 OzGarage Floors, Engine Bays, Machinery, Greasy Tools, Tires, Undercarriage, Shops, and a Variety of Vehicles CleaningCheck On Amazon
STANLEY HOME PRODUCTS Engine DegreaserLiquidUnscented32 OzCookware, Grills, Woodwork, Laundry, Broilers, Countertops, Tools & MoreCheck On Amazon
POR-15 Engine DegreaserLiquidUnscented32 OzEngines, Fuel Tanks, Closed Systems, Fiberglass, Plastics, Wood & Painted SurfacesCheck On Amazon
Simple Green Engine DegreaserSprayUnscented32 OzFloors, Walls, Industrial Equipment, Appliances, Parts, Automotive or Recreational VehicleCheck On Amazon
Purple Power Engine DegreaserSprayUnscented40 OzAuto, Home, Marine, Farm, Shop, and Industrial ApplicationsCheck On Amazon
WD-40 Engine DegreaserSprayUnscented18 OzAuto & Truck Engines, Tractors, Forklifts, Gears & Chains, Industrial Machinery, Farm & Power Equipment.Check On Amazon
SONAX Engine Degreaser SprayFresh17.6 OzVehicle Engines (Parts and Tools) and WheelsCheck On Amazon
3D Grand Engine DegreaserLiquidUnscented1 Gallon (128 Oz)Home Use, Clean Engines, Machinery, Tools, Floors, Painted Surfaces, and MoreCheck On Amazon
Gunk Engine DegreaserSprayUnscented32 OzOn all Metal & Plastic SurfacesCheck On Amazon

Best Engine Degreasers Reviews

1. Oil Eater Engine Degreaser

Oil Eater Engine DegreaserIntroducing the Oil Eater Original Cleaner and Degreaser – your go-to solution for tackling stubborn grease, oil, and heavy-duty stains. This 1-gallon container packs a powerful punch, trusted by both professionals and DIY enthusiasts.

This specially formulated degreaser effortlessly dissolves and removes the toughest grease and oil stains. It’s a versatile, eco-friendly, biodegradable, and reliable cleaning solution with a refreshing lemon scent, suitable for a wide range of applications, from automotive maintenance to industrial degreasing. Oil Eater simplifies your cleaning routine, leaving surfaces in pristine condition.

To use, dilute the concentrated solution with water (mix 3 parts water to 1 part Oil Eater). It’s free from harmful acids, abrasives, and petroleum solvents, ensuring environmental responsibility and safety for both professionals and home users (cleaning your garage, workshop, or industrial equipment). While its non-toxic formula is gentle on skin and surfaces.

With its ultra-concentrated formula, Oil Eater works wonders on various surfaces, leaving no chemical smell behind. It’s USDA-approved for food facilities, making it an ideal choice for any application (indoor and outdoor usage).

Best Features

  • Professional Strength: Trusted by professionals for industrial-grade cleaning power.
  • Versatile: Effective on a variety of surfaces, including concrete, metal, machinery, and more.
  • Grease Dissolver: Breaks down and removes built-up grease and oil, restoring surfaces to their original shine.
  • Powerful Cleaning: Dissolves any type of oil, grease, stains, spills, and dirt from any washable surface.
  • User-Friendly: The 1-gallon size ensures you have plenty of product for your cleaning tasks.
  • Environmentally Friendly: Non-toxic and biodegradable, making it a responsible choice for eco-conscious users.
  • Easy to Dilute: Ultra-concentrated formula is easy to dilute (as required) and offers flexibility in your cleaning routine.

User Feedback

Experience the power of Oil Eater Original Cleaner and Degreaser, providing professional-quality cleaning for your home or workplace. Customers have praised its exceptional performance, although some users noted that it may not work well with heavy stains and also requires a spray bottle.

Buy Now From Amazon

2. Chemical Guys Engine Degreaser

Chemical Guys Engine DegreaserExperience the versatility of Chemical Guys CLD_201_16 Signature Series Orange Degreaser. This 16 fl. oz bottle is your all-in-one solution for effective cleaning. Designed for a variety of surfaces, it effortlessly tackles the toughest dirt, grime, and grease on the car, truck, motorcycle, RV, or other vehicles.

From automotive applications to cleaning around the home, this high-performance citrus degreaser is trusted by enthusiasts and professionals alike. Its advanced formula works directly without dilution, breaking down grease, oil, and grime with ease. Use it on engine bays, tires, wheels, machinery, and more, for spotless results.

Rest assured, it’s tough on stains but gentle on your vehicle’s paint, metal, and plastic surfaces. Plus, it’s biodegradable, making it an eco-friendly and safe choice for regular use.

Best Features

  • Multipurpose Power: Ideal for cars, trucks, motorcycles, RVs, and more, offering versatile cleaning.
  • Effective Grease Removal: Excels at breaking down stubborn grease and oil stains, restoring surfaces to their original luster.
  • Safe for Various Surfaces: Use safely on a wide variety of surfaces and won’t harm your vehicle’s finish or other materials.
  • User-Friendly Size: The 16 fl oz bottle ensures multiple cleaning sessions, making it convenient and cost-effective.
  • Trusted Brand: Chemical Guys is known for its high-quality automotive detailing products, and CLD_201_16 Signature Series Orange Degreaser lives up to its reputation.

User Feedback

Elevate your cleaning game with Chemical Guys CLD_201_16 Signature Series Orange Degreaser, a versatile and powerful degreaser for a range of cleaning applications. Some users reported issues with the bottle’s quality and its potential to etch aluminum at higher concentrations.

Buy Now From Amazon


STANLEY HOME PRODUCTS Engine DegreaserExperience the remarkable cleaning power of STANLEY HOME PRODUCTS Degreaser Concentrate. This versatile solution effortlessly tackles tough grease and grime. You can create 64 gallons of potent cleaning solution from a single container (32 oz.), making it a cost-effective choice for various cleaning needs.

This high-quality formula effectively eliminates even the most stubborn grease and grime, in both household and commercial use. Its concentrated nature offers exceptional value, and it works equally well with soft or hard water, ensuring stains vanish in seconds. With twice the concentration of the original formula, it can handle even the toughest messes.

Use this multipurpose product for various applications, such as cleaning equipment, tools, dishes, countertops, and laundry, achieving a shiny, spotless finish. It’s a practical, powerful, and cost-effective solution for all your cleaning requirements.

Best Features

  • High Concentration: Create 64 gallons of powerful cleaning solution from one bottle, ensuring long-lasting value.
  • Stubborn Grease Removal: Effectively breaks down and removes tough grease and grime for a wide range of cleaning tasks.
  • Multipurpose Use: Ideal for both household and commercial spaces, offering versatility in various settings.
  • Safety: This biodegradable degreaser is tough on stains yet gentle on surfaces and your skin, making it an eco-friendly choice.
  • Easy Preparation: Simply mix with water to tailor the solution to your specific needs.
  • Trusted Brand: STANLEY HOME PRODUCTS is a renowned name in the cleaning industry, known for reliable and effective solutions.

User Feedback

Say farewell to stubborn grease and grime and enjoy a cleaner, more efficient environment with STANLEY HOME PRODUCTS Degreaser. Many satisfied customers have praised its performance, but some have noted that it may not be suitable for all surfaces.

Buy Now From Amazon

4. POR-15 Engine Degreaser

POR-15 Engine DegreaserMeet the POR-15 Cleaner Degreaser – a powerful & revolutionary solution designed to tackle grease, oil, and surface grime. This 1-quart container delivers top-notch cleaning without flammable risks, making it perfect for various cleaning tasks. Whether you’re tackling automotive maintenance or industrial applications, this non-flammable, water-based cleaner is your reliable partner.

This unique water-based cleaner not only effectively removes grease, oil, and surface grime from a wide range of surfaces, including vinyl, nylon, holding tanks, grease traps, auto parts, and more, but it’s also safe, versatile, and easy to use. Prioritizing safety without compromising cleaning power, it ensures that your surfaces stay perfect, shiny, and long-lasting.

Best Features

  • Non-Flammable: POR-15 is non-flammable, making it a safer choice for users concerned about fire hazards during cleaning.
  • Effective Degreasing: This degreaser excels at breaking down and removing stubborn grease and oil stains, restoring surfaces to their original condition.
  • Water-Based: The water-based formula is safe and environmentally friendly, promoting responsible cleaning practices.
  • Ample Quantity: With 1 quart of product, you have enough cleaner for multiple projects, offering a cost-effective solution.
  • Versatile: Suitable for automotive, household, and industrial use, this cleaner adapts to various cleaning needs.

User Feedback

POR-15 Cleaner Degreaser is an excellent choice for cleaning a variety of surfaces, including those for painting, and it effectively removes stubborn oil stains without flammable concerns. Most users have shared positive experiences about its performance. However, some users noted that very stubborn stains may require multiple applications, and they should be used with care on delicate surfaces.

Buy Now From Amazon

5. Simple Green Engine Degreaser

Simple Green Engine DegreaserUnleash the cleaning prowess of Simple Green Pro HD Purple Concentrated Cleaner & Degreaser—a heavy-duty and professional-grade solution crafted for various applications. Available in a handy 32 oz spray bottle and a 1-gallon concentrate refill, this versatile cleaner is your go-to for challenging tasks in automotive, restaurant, grill, oven, and more.

This top-tier cleaning solution effortlessly removes grease, grime, and tough stains with its concentrated formula. It’s cost-effective, making it a reliable choice for heavy-duty and professional cleaning tasks. Whether it’s automotive detailing or restaurant kitchen maintenance, this cleaner excels in versatility and effectiveness.

Safe on both hard and soft surfaces, including metal, it’s non-toxic, non-corrosive, and biodegradable—ensuring safety for users and the environment while being tough on stains. Ideal for painting and welding prep, it efficiently degreases tools, equipment, and various vehicles.

Best Features

  • Heavy-Duty Cleaning: Engineered for the toughest challenges, making it ideal for industrial and professional use.
  • Concentrated Formula: The 1-gallon refill provides ample cleaning solutions for a long-lasting supply tailored to your needs.
  • Multipurpose Use: Excels in cleaning vehicles, restaurant equipment, grills, ovens, and more in various settings.
  • Heavy Strength Spray: The 32 oz spray bottle is ready to use at heavy strength for immediate cleaning tasks.
  • Trusted Brand: Simple Green is a respected name in the cleaning industry, known for high-quality solutions.

User Feedback

Elevate your cleaning game with Simple Green Pro HD Purple Concentrated Cleaner & Degreaser. This effective solution will simplify even the toughest cleaning tasks. However, some users mentioned it’s a bit expensive compared to other options.

Buy Now From Amazon

6. Purple Power Engine Degreaser

Purple Power Engine DegreaserDiscover the amazing cleaning power of Purple Power 4319PS Industrial Strength Cleaner and Degreaser—a versatile solution designed to tackle the toughest grease, grime, oil, and stains. Packed in a 40 oz. bottle, this product has industrial-strength cleaning prowess, making it a must-have tool for professionals and DIY enthusiasts alike.

This high-performance solution is engineered to break down and dissolve even the most stubborn contaminants, ensuring no grease or grime stands a chance. Whether you’re working on automotive maintenance, household cleaning, or industrial tasks, this versatile product is up for the challenge, adaptable to various surfaces like metals, concrete, plastic, and painted surfaces.

When it comes to safety and environmental responsibility, it’s biodegradable, non-flammable, and non-abrasive—gentle on the skin and the environment, giving you confidence in your cleaning efforts.

Best Features

  • Industrial Strength: Specially formulated with powerful cleaning agents to handle stubborn grease and grime.
  • Versatile Application: Suitable for various surfaces, making it ideal for automotive, household, and industrial cleaning.
  • Effective Degreasing: Excels at breaking down and removing built-up grease and oil, restoring surfaces to their original condition.
  • Generous Size: The 40 oz. bottle provides ample product for multiple cleaning tasks, ensuring a reliable solution is always on hand.
  • Trusted Brand: Purple Power is a respected name in the cleaning industry, known for delivering effective and reliable cleaning solutions.

User Feedback

Purple Power 4319PS Industrial Strength Cleaner and Degreaser effectively remove tough stains, offering a pristine surface in auto, home, marine, farm, and industrial applications. However, some users noted that it may not work well on greasy highways, and there have been reports of the bottle leaking a bit.

Buy Now From Amazon

7. WD-40 Engine Degreaser

WD-40 Engine DegreaserUnlock the cleaning potential of WD-40 Specialist Machine & Engine Degreaser Foaming Spray—a top-notch solution designed to effortlessly remove grease, oil, and grime from machinery, engines, and various surfaces. In a handy 18 oz. foaming spray can, this degreaser offers a high-performance cleaning experience trusted by both professionals and DIY enthusiasts.

This cutting-edge solution is crafted to tackle the toughest greasy and dirtiest surfaces. Its foaming spray action clings to surfaces, providing extended contact time for superior cleaning. This versatile product is ideal for automotive maintenance, machinery, and equipment cleaning, it adheres to vertical and overhead surfaces, penetrating deep into engines, machinery, and equipment to break down stubborn grease and grime without excessive scrubbing.

WD-40, a trusted brand in maintenance, ensures that this specialist degreaser is safe on various surfaces (metals) without leaving any residue. It not only looks clean but performs exceptionally well. You can spray this low-residue, water-based foaming degreaser up to 5 feet for long-distance application, while its included straw will create a precision stream of cleaner for controlled application (auto & truck engines, industrial machinery, and farm equipment).

Best Features

  • Foaming Action: The foaming spray ensures the degreaser adheres to surfaces, penetrating and breaking down tough grease and grime effectively.
  • Versatile Application: Suitable for machinery, engines, equipment, and various surfaces, making it ideal for professional and DIY use.
  • Effective Degreasing: Excels at removing built-up grease and oil, restoring surfaces to their original condition.
  • Convenient Size: The 18 oz. foaming spray can is easy to handle and provides a generous amount of product for multiple cleaning tasks.
  • Trusted Brand: WD-40 is a well-known and respected brand, recognized for reliable and innovative cleaning solutions that enshrine the shine in your surroundings.

User Feedback

WD-40 Specialist Machine & Engine Degreaser Foaming Spray is a game-changer that simplifies tough cleaning tasks. It removes stubborn grease and grime effortlessly with its versatility, foaming application, affordable, and commitment to quality. However, some users expressed disappointment in its build quality and tougher jobs might need solvent-based cleaners.

Buy Now From Amazon

8. SONAX Engine Degreaser

SONAX Engine DegreaserExperience the cleaning power and safety of SONAX 543200-755 Engine Degreaser and Cleaner— an advanced solution crafted for effortless cleaning of your vehicle’s engine. Packed in a convenient 16.9 fl. oz. bottle, this cleaner provides a high-performance experience trusted by automotive enthusiasts and professionals alike.

This cutting-edge formula is specially designed to tackle the toughest grease, oil, and grime that accumulate in your engine bay. Its powerful cleaning action ensures a thorough removal of built-up contaminants, restoring your engine to its optimal condition.

The SONAX Engine Degreaser and Cleaner offer versatility, suitable for a wide range of automotive applications. Whether you’re a DIY enthusiast or a professional, this cleaner is ideal for maintaining the cleanliness and performance of your vehicle’s engine. Safety and environmental responsibility are top priorities, this biodegradable, and non-corrosive degreaser is safe for both the environment and human skin and toughest on the stains.

Restore your OEM factory shine and perfect look on engine tools & parts. Also, it removes grime on vertical surfaces and other stubborn or hard-to-reach areas. It is effective to handle the toughest jobs that other degreasers won’t handle.

Best Features

  • Powerful Cleaning: Engineered to tackle the toughest grease, oil, and grime in your vehicle’s engine bay.
  • Convenient Size: The 16.9 fl. oz. bottle provides ample product for multiple cleaning tasks, ensuring a reliable solution is always on hand.
  • Versatile Application: Ideal for a variety of automotive applications, making it suitable for both DIY and professional use.
  • Easy Spray Application: The convenient spray design allows for precise and straightforward application. Its engine-safe formula offers reliable automotive maintenance.
  • Biodegradable: The eco-friendly formula promotes safe and responsible cleaning practices.
  • Quick and Thorough: Engineered for swift and thorough cleaning, making routine maintenance simple.
  • Cold Cleaning Specialist: Formulated for effectiveness in lower temperatures, offering versatility in use.

User Feedback

SONAX 543200-755 Engine Degreaser and Cleaner is a game-changer that simplifies the task of cleaning your vehicle’s engine. With its powerful cleaning action and versatile application, it has earned the trust of users. However, some users complained that it is a bit expensive.

Buy Now From Amazon

9. 3D Grand Engine Degreaser

3D Grand Engine DegreaserUnleash the cleaning might of 3D Grand Blast Heavy Duty Degreaser—a versatile and powerful solution designed to tackle grease and grime buildup with ease. This 1-gallon container is your go-to all-purpose cleaner, safe and effective for use on cars, engines, floors, painted surfaces, and throughout your home.

Designed for quick and efficient cleaning, the 3D Grand Blast Heavy Duty Degreaser is a game-changer for handling tough grease, oil, and grime in different settings, from automotive maintenance to garage cleanups and industrial applications. Whether you’re cleaning your vehicle, refreshing your floors, or handling household tasks, this all-purpose cleaner is up to the challenge.

Top priorities include versatility and safety, making 3D Grand Blast Heavy Duty Degreaser user and environmentally friendly. It saves you time and effort, simplifying your cleaning routine and reducing the need for multiple products. The concentrated formula ensures a little goes a long way, needing dilution before rinsing off dirt and grime buildup.

Best Features

  • Heavy Duty Cleaning:  Engineered to handle tough grease and grime buildup on cars, engines, floors, and in your home.
  • All-Purpose Cleaner: Versatile and effective for a wide range of applications, simplifying your cleaning routine.
  • Rapid Cleaning Action: Quickly and efficiently cleans grease and grime buildup, saving you time and effort.
  • Generous Size: The 1-gallon container provides ample product for multiple cleaning tasks, ensuring long-lasting value.

User Feedback

3D Grand Blast Heavy Duty Degreaser is a reliable and powerful solution that simplifies the task of cleaning tough grease and grime. For heavy-duty cleaning with trusted results, choose this degreaser to maintain a shiny surface. However, some users found it to be a mediocre degreaser and not the best option for painted surfaces.

Buy Now From Amazon

10. Gunk Engine Degreaser

Gunk Engine DegreaserDiscover the exceptional Gunk EBT32 Engine Cleaner and Degreaser—an indispensable tool to preserve a spotless and efficient engine. Housed in a convenient 32 oz. bottle, this cleaner is precisely designed to tackle combat grease and grime, ensuring your engine remains in optimal and long-lasting shinier condition.

This heavy-duty engine cleaner degreaser boasts a zero-VOC formula, expertly designed to break down and dissolve stubborn contaminants. Ideal for automotive enthusiasts, professionals, and DIYers alike, it excels in cleaning your vehicle’s engine bay, degreasing parts, and handling routine maintenance—all without the need for special tools.

Featuring a user-friendly trigger spray design, this biodegradable mix effortlessly removes tough stains and grease. After applying, a thorough rinse with water after 10 – 15 minutes ensures a pristine surface.

Best Features

  • Powerful Cleaning: Formulated to effectively break down and dissolve grease and grime on your engine.
  • Convenient Size: The 32 oz. bottle provides ample quantity for various cleaning tasks, offering long-lasting value.
  • Versatile Application: Suitable for use on a variety of engine components, making it a versatile solution for automotive maintenance.
  • Eco-Friendly Cleaning: With a zero-VOC formula and biodegradable composition, this spray is both eco-friendly and powerful, offering a responsible choice.
  • User-Friendly Spray: The easy-to-use trigger spray simplifies its application, allowing precise cleaning without extra tools.
  • Effortless Contaminant Removal: The potent formula effortlessly removes stubborn contaminants, making your cleaning hassle-free.

User Feedback

Gunk EBT32 Engine Cleaner and Degreaser stand out as a reliable and effective solution to maintain a clean engine, thanks to its potent cleaning action and convenient size. While earning positive feedback, some users have noted that it may not be highly concentrated at this price point for the removal of the most stubborn grease or oil on the surface.

Buy Now From Amazon

Buying Guide for the Best Engine Degreasers

1. Multi-Surface Cleaning

Why It Matters: Engines comprise different materials, including metals, plastics, and rubber components. A degreaser capable of cleaning multiple surfaces without causing damage is essential for comprehensive engine maintenance.

What to Look For: Seek degreasers labeled as safe for use on a variety of materials. Products that specify compatibility with metals, plastics, and rubber offer the versatility needed for thorough engine cleaning. Additionally, check for non-corrosive formulations to protect engine components over time.

2. Scent or Fragrance

Why It Matters: Cleaning products, especially degreasers, often come with strong chemical odors that can be unpleasant or overwhelming. A pleasant scent or fragrance can make the cleaning process more bearable, especially for those sensitive to strong smells.

What to Look For: Opt for degreasers that either have a mild, pleasant fragrance or are formulated to minimize chemical odors. However, it’s crucial to balance scent preferences with effectiveness; the primary goal is to clean your engine efficiently.

3. Type of Engine Degreaser (Water-Based vs. Petroleum-Based)

Why It Matters: The base of an engine degreaser affects its cleaning power, environmental impact, and safety for certain engine parts.

  • Water-Based Degreasers are generally safer for the environment and user, being less toxic and easier to dispose of. They are effective for light to moderate grease and can be used on various surfaces without the risk of damage.
  • Petroleum-Based Degreasers offer strong cleaning capabilities, especially for heavy grease and oil deposits. However, they can be more harmful to the environment and may require careful handling to avoid damaging sensitive engine components.

What to Look For: Consider the level of grease accumulation and the types of surfaces you need to clean. For light cleaning and eco-friendly preferences, water-based degreasers are suitable. For tougher jobs, a petroleum-based option might be necessary. Always check the product’s compatibility with your engine’s components to prevent damage.

4. Form

Why It Matters: The physical form of an engine degreaser—whether it’s a spray, gel, or foam—plays a significant role in its application, effectiveness, and ease of use. Each form has its unique advantages and is suited to different cleaning scenarios and preferences.

What to Look For

  • Spray Degreasers: These are the most common and versatile form of engine degreasers. They are easy to apply, especially in hard-to-reach areas, and are suitable for a quick and efficient cleaning process. Look for adjustable nozzles to control the spray pattern and coverage according to your specific needs.
  • Gel Degreasers: Gels are thicker and adhere to surfaces longer, providing a deep clean for heavily soiled engines. This form is particularly effective for vertical surfaces where liquid products might run off before they can act. When choosing a gel degreaser, consider its dwell time—the longer it can stay on the surface without drying, the more effective it will be at breaking down tough grease.
  • Foam Degreasers: Foam formulations provide a thick, clinging layer that deeply penetrates grease and grime. They are excellent for detailed cleaning, as the foam expands into nooks and crannies, ensuring thorough coverage. Foam degreasers are ideal for users looking for a balance between spray and gel benefits. Opt for products that offer a dense foam for maximum effectiveness.

5. Engine Safety

Why It Matters: Not all degreasers are safe for every engine component. Some formulations can be too harsh, potentially damaging rubber seals, gaskets, or plastic parts. Ensuring the product is safe for your entire engine is crucial to avoid costly repairs or damage.

What to Look For: Look for degreasers that explicitly state their compatibility with all engine materials, including metals, plastics, and rubbers. Additionally, products that are pH balanced or specify that they are non-corrosive tend to be safer choices for a wide range of engine components.

6. Residue-Free

Why It Matters: A degreaser that leaves behind residue can attract dirt and dust, leading to a cycle of cleanliness issues. Moreover, residue can be difficult to remove and might affect the appearance or function of engine parts.

What to Look For: Seek out degreasers that advertise a residue-free finish. This means that once the product is rinsed off, it leaves behind no sticky or oily film, ensuring the engine not only looks clean but remains free of attractants for grime and dirt. Products that mention quick-drying or that they evaporate completely are typically good indicators of a residue-free formula.

7. Environmental Impact

Why It Matters: The environmental footprint of engine degreasers is a significant concern. Chemicals that harm the environment can contaminate water sources and affect wildlife. Opting for environmentally friendly options reflects responsible usage and compliance with regulations.

What to Look For: Seek degreasers that are biodegradable, non-toxic, and free from harmful solvents or phosphates. Products that highlight eco-friendly ingredients or certifications from environmental organizations ensure minimal environmental impact.

8. Application Method

Why It Matters: The application method can influence the ease of use, the amount of product needed, and the effectiveness of the degreaser. Whether it’s a spray, foam, or liquid, the application method should suit your cleaning needs and preferences.

What to Look For: Consider degreasers with adjustable nozzles for sprays to control the application’s breadth and intensity. Foam applications are excellent for sticking to vertical surfaces for deep cleaning. Liquid degreasers might be preferred for immersion cleaning of parts. Ensure the method of application matches your intended use for efficient and effective cleaning.

9. Safety Gear and Precautions

Why It Matters: Using chemical degreasers can pose health risks, including skin irritation and inhalation hazards. Proper safety gear and precautions are essential to protect yourself during the cleaning process.

What to Look For: Check the product label for recommended safety gear, such as gloves, goggles, and masks, and follow the guidelines closely. Additionally, opt for degreasers that emphasize safety in their formulation, indicating lower risks of harmful effects. Products that require minimal safety gear often have a safer chemical composition.

10. Storage

Why It Matters: Proper storage ensures the degreaser maintains its effectiveness over time and reduces risks of accidental spillage or exposure. Certain chemicals might require specific storage conditions to prevent degradation or hazards.

What to Look For: Look for products with sturdy, leak-proof containers and clear storage instructions. Degreasers that are stable at a range of temperatures and do not require special conditions (like refrigeration or avoidance of direct sunlight) are more convenient and safer to store.

Best Engine Degreaser – FAQs

1. Could engine degreasers potentially harm/hamper belt condition?

Ans: Most of the products on the market are designed to be safe for use with rubber belts. However, it’s essential to avoid saturating the belts with degreaser, although they can generally withstand contact with water without issue. However, it is always recommended to be very careful while using a degreaser in a way that the belt should not soak it.

2. How to rinse the engine after applying degreaser?

Ans: When rinsing your engine, exercise caution around certain components. If your vehicle has a carburetor, refrain from spraying water into it. Cover the alternator with a bag to shield it from water exposure. Additionally, ensure to direct the water stream towards the more resilient parts while being mindful to avoid electrical boxes.

3. What to do with the residue/gunk that drips off during the cleaning process?

Ans: It’s vital to be environmentally responsible and avoid releasing oil and gunk onto the street. Don’t start degreasing the engine and rinse off the oil everywhere, as it leads to getting a fine. Instead, place a sturdy plastic sheet beneath the vehicle to catch the larger debris. After you’re done, roll up the sheet and dispose of the collected waste properly to prevent potential fines and environmental harm.

4. Are all engine degreasers safe to use on all surfaces?

Ans: No, not all engine degreasers are suitable for every surface. It is essential to check the manufacturer’s recommendations to ensure compatibility with specific materials and surfaces. Some degreasers are versatile and can be used on various surfaces, while others are more specialized.

5. Can we use an engine degreaser indoors (garage or workshop)?

Ans: Yes, you can use engine degreasers indoors, but you should ensure proper ventilation. Some degreasers may have strong odors or fumes, so good airflow is important. Also, choose non-flammable and eco-friendly options for indoor use.

6. How to apply an engine degreaser to the engine or equipment?

Ans: The method of applying degreaser varies based on the product. Typically, you can either spray or apply the degreaser to the surface, let it sit for a few minutes to penetrate the grime, and then use a brush or cloth to scrub away the dirt. Ensure to follow the manufacturer’s instructions.

7. Are there eco-friendly or biodegradable engine degreasers available?

Ans: Yes, there are eco-friendly and biodegradable engine degreasers on the market. These products are formulated to have a reduced environmental impact and are a responsible choice for those who are environmentally conscious.

8. Can we dilute concentrated engine degreasers, and how to do it?

Ans: Yes, you can dilute concentrated engine degreasers. Following the manufacturer’s guidelines for dilution ratios, typically mixing the degreaser with water in a separate container. Be cautious not to over-dilute, as this may affect its cleaning power.

9. Can I use an engine degreaser on my vehicle’s painted surfaces?

Ans: It’s generally not recommended to use engine degreasers on painted surfaces, as they may damage the paint. Be careful when applying the degreaser near painted areas, and avoid prolonged contact.

10. Are engine degreasers suitable for use on hot engines or equipment?

Ans: Some engine degreasers are designed for use on warm surfaces, but it’s essential to check the product’s specific guidelines. Avoid using degreasers on scorching surfaces to prevent potential damage or safety hazards.


Choosing the best engine degreaser depends on your needs. Here are top picks for various situations:

  • Heavy-duty cleaning: For tackling caked-on grime, Oil Eater Engine Degreaser is a professional-strength option that dissolves grease and tough stains.
  • Versatility: If you need an all-purpose cleaner for your car, Simple Green Engine Degreaser offers a concentrated formula that’s safe on multiple surfaces and dilutes to make a large quantity.
  • Water-based and safe: For those concerned about flammability or environmental impact, POR-15 Engine Degreaser is a water-based, non-flammable option that removes grease, oil, and debris.

Remember, always follow the product’s instructions for safe and effective use.

Leave a Reply

Your email address will not be published. Required fields are marked *