5 Best Engine Degreasers to Make Your Engine Shine Like New

If you're looking to restore your engine to its former glory, did you know that using a degreaser can improve your car's resale value by up to 10%? The right degreaser can make all the difference in how your engine looks and functions.

But with so many options available, how do you choose the best one for your needs? Let's explore the top 5 engine degreasers that can make your engine shine like new.

Chemical Guys Signature Series Orange Degreaser (16 fl oz)

If you're looking for a high-performance degreaser that tackles tough grime on your engine and various surfaces, the Chemical Guys Signature Series Orange Degreaser (16 fl oz) is the go-to choice for car enthusiasts and detailers. This professional-strength citrus degreaser is super concentrated, making it effective in removing stubborn grease and grime. Customers rave about its versatility, using it on engines, exhausts, grills, and more. Dilution recommendations ensure long-lasting and efficient use, with tips on outdoor applications.

While it has a strong odor and viscosity, it excels at specific tasks like engine detailing and cleaning bike chains. With additional uses such as cleaning ham radios and degreasing ovens, this product stands out for its reliability and effectiveness in the world of car care.

Best For: Car enthusiasts and detailers seeking a professional-strength degreaser for tough grime on engines and various surfaces.


  • Versatile application on different surfaces
  • Super concentrated formula for effective grease removal
  • Trusted brand known for quality car care products


  • Strong odor and viscosity may be off-putting

WD-40 Specialist Machine & Engine Degreaser Foaming Spray, 18 OZ

For those seeking a powerful degreaser that effectively removes oil, dirt, grime, and grease from machinery and engines, WD-40 Specialist Machine & Engine Degreaser Foaming Spray, 18 OZ is the ideal choice. This low-residue, water-based foaming formula penetrates deep into crevices, making it perfect for auto, truck engines, industrial machinery, and farm equipment.

The nozzle sprays up to 5 ft., allowing for long-distance application, and the precision stream straw ensures controlled usage. Outperforming competitors in independent laboratory testing, this degreaser removes grease, oil, dirt, grime, tar, adhesives, and more without the need for disassembly.

Safe for most metals when used as directed and 50-state VOC compliant, it's a reliable option for your degreasing needs.

Best For: Those looking for a powerful degreaser to effectively remove oil, dirt, grime, and grease from machinery, engines, and equipment.


  • Provides more cleaning time as it sticks when foamed up
  • Easy to apply and instantly removes grease and dirt
  • Outperforms competitors in independent laboratory testing


  • Some users may find the nozzle sprays too far for precise application

Berryman Products 1133 B-33 Engine Degreaser, 18.4 Ounce, (Single Unit)

Ideal for those seeking a powerful engine degreaser that effectively cleans all engine components, including paint, rubber, and plastic, the Berryman Products 1133 B-33 Engine Degreaser stands out for its high-performance formula. This 18.4-ounce single unit product contains high-performance detergents and emulsifiers that easily penetrate road grime, grease, and oil.

It cleans the entire engine compartment without containing phosphates, solvents, VOCs, or abrasives, making it VOC compliant in all 50 states. With a 4.2 out of 5 stars rating from 107 ratings, this engine degreaser has garnered positive feedback for its cleaning capabilities.

For those looking for a reliable engine degreaser, the Berryman Products 1133 B-33 Engine Degreaser could be a suitable option.

Best For: Individuals looking for a powerful engine degreaser that effectively cleans all engine components without containing harmful chemicals.


  • Contains high-performance detergents and emulsifiers for effective cleaning.
  • Cleans the entire engine compartment, including paint, rubber, and plastic.
  • VOC compliant in all 50 states, making it environmentally friendly.


  • May not be as effective on extremely tough grease and grime.

Purple Power Industrial Strength Cleaner and Degreaser – 1 Gallon (128 Fl Oz)

With its highly concentrated formula that swiftly penetrates grease, oil, and dirt on various surfaces, the Purple Power Industrial Strength Cleaner and Degreaser – 1 Gallon (128 Fl Oz) is a versatile solution for those seeking efficient cleaning in auto, home, marine, farm, and shop applications. This biodegradable and non-abrasive cleaner creates a barrier between the stain and the surface being cleaned, making it effective for a range of tough cleaning tasks. Remember to test it on a hidden area before use, wear protective gear, and avoid certain surfaces like exterior car surfaces and painted surfaces. With its fast-acting properties, this Purple Power cleaner eliminates the need for excessive scrubbing, saving you time and effort while delivering a sparkling clean finish.

Best For: Those looking for a versatile and efficient cleaner for tackling tough grease and grime.


  • Highly concentrated formula for economical use.
  • Fast-acting, eliminating the need for excessive scrubbing.
  • Suitable for various applications in auto, home, marine, farm, and shop settings.


  • Not recommended for use on certain surfaces like exterior car surfaces and painted surfaces.

Oil Eater Original 1 Gallon Cleaner & Degreaser

When aiming for a sparkling engine that's free of grease and grime, the Oil Eater Original 1 Gallon Cleaner & Degreaser stands out as a powerful and versatile solution suitable for various cleaning applications. Manufactured by Kafko International, LTD, this product is USDA approved for use in food service facilities and boasts a biodegradable formula free of harsh solvents. With its ability to dissolve grease, oil, and dirt effectively, this ultra-concentrated cleaner can be used on floors, walls, driveways, grills, and more.

With an average rating of 4.3 out of 5 stars from over 10,000 reviews, it's evident that customers appreciate its cleaning performance and versatility on different surfaces. If you seek a cost-effective and efficient solution for removing oil stains, the Oil Eater Original 1 Gallon Cleaner & Degreaser comes highly recommended.

Best For: Individuals and businesses looking for a powerful and versatile cleaner and degreaser that's effective on grease, oil, and dirt on various surfaces.


  • Dissolves grease, oil, and dirt effectively
  • USDA approved for use in food service facilities
  • Biodegradable formula with no harsh solvents


  • May not be suitable for extremely heavy-duty industrial cleaning tasks

Factors to Consider When Choosing Engine Degreaser

When selecting an engine degreaser, consider factors like the type of surfaces you'll be cleaning, the efficiency of the product, its environmental impact, and the safety measures needed.

These aspects are crucial in ensuring you choose the right degreaser for your specific needs. By weighing these elements carefully, you can make an informed decision that will help you achieve a sparkling engine without compromising on safety or effectiveness.

Degreaser Selection Tips

To select the right engine degreaser, consider the type of surface you'll be cleaning and the level of grease and grime you need to tackle. Choose a degreaser formulated for the specific material of your engine to avoid damage. Ensure the degreaser is suitable for the grease intensity you're dealing with, whether it's light buildup or heavy-duty grime.

Opt for environmentally friendly options that are biodegradable and safe for the surroundings. Evaluate the application method that best fits your needs, whether it's a spray for easy coverage or a foam for better adhesion on vertical surfaces.

Reading reviews and ratings can also help you determine the degreaser's effectiveness and versatility in various cleaning tasks.

Application Surfaces

Consider the compatibility of the engine degreaser with different surfaces like metal, plastic, rubber, and painted surfaces before making your selection. Ensure the degreaser is safe for use on surfaces commonly found in engine compartments, such as hoses, wires, and connectors. Evaluate if it's suitable for automotive, industrial, or household surfaces to meet your specific cleaning needs.

Check if the degreaser is recommended for cleaning engines, machinery, tools, equipment, or other surfaces you intend to clean. Opt for a versatile degreaser effective on a wide range of surfaces to maximize its utility for various cleaning tasks. Compatibility with diverse surfaces is key in achieving optimal results when using an engine degreaser.

Cleaning Efficiency Factors

For optimal cleaning results, assess the engine degreaser's ability to effectively penetrate and break down grease, oil, dirt, and grime. The formulation of the degreaser, whether concentrated or foaming, plays a crucial role in its cleaning efficiency.

Consider the degreaser's versatility in cleaning various surfaces beyond just engines, such as machinery, tools, and equipment. Look for products that are safe for use on different materials like metals, plastics, rubber, and painted surfaces.

Factors like biodegradability, non-abrasiveness, and VOC compliance can also impact the cleaning efficiency of an engine degreaser. By evaluating these aspects, you can choose a degreaser that delivers optimal cleaning performance for your engine and other surfaces.

Environmental Considerations

When selecting an engine degreaser, prioritize environmentally friendly options that minimize harm to ecosystems and reduce air pollution.

Look for biodegradable products to decrease the negative impact on the environment. Choose degreasers with low VOC content to lower air pollution and potential health risks.

Opt for phosphate-free formulas to prevent water pollution and protect aquatic life. Consider water-based solutions as they're less toxic and safer for the environment compared to solvent-based alternatives.

Ensure the degreaser holds certifications like NSF Category C1, indicating it meets specific environmental standards and regulations.

Safety Precautions Highlighted

Prioritize your safety by always wearing protective gear like gloves and goggles when handling engine degreasers. These products often contain harsh chemicals that can be harmful if not used with caution.

Additionally, ensure proper ventilation in the area where you're applying the degreaser to prevent inhaling potentially harmful fumes. When using the degreaser, be cautious around sensitive engine components like electrical connections to avoid any damage.

Following the manufacturer's instructions is crucial for your safety; adhere to recommended dilution ratios and application methods to ensure both safety and effectiveness.

Cost-Effectiveness Comparison

To determine the most cost-effective engine degreaser for your needs, compare prices per unit volume and consider dilution ratios and coverage area. Look for products with lower prices per ounce or liter to get the best value.

Additionally, check the dilution ratios recommended by manufacturers as they can impact the overall cost of using the degreaser over time. Opt for concentrated formulas that require smaller amounts for effective cleaning, potentially saving you money in the long run.

Evaluate the coverage area per application to understand how much product you'll need for your specific cleaning requirements. Choosing a degreaser that's compatible with multiple surfaces can also help reduce the need for purchasing different products, further enhancing cost-effectiveness.

Frequently Asked Questions

Can Engine Degreasers Be Used on All Types of Engines, Including Diesel and Gasoline Engines?

Yes, engine degreasers can be used on all types of engines, including diesel and gasoline engines. They are effective in removing grease and grime, restoring your engine's shine. Just make sure to follow the product instructions for best results.

Are Engine Degreasers Safe to Use on All Engine Components, Such as Rubber Hoses and Plastic Parts?

Yes, engine degreasers are generally safe for use on all engine components, including rubber hoses and plastic parts. However, it's always wise to check the product label and manufacturer instructions to ensure compatibility with specific materials.

How Often Should Engine Degreasers Be Used to Maintain a Clean Engine?

To maintain a clean engine, use degreasers every few months. Follow manufacturer's instructions for best results. Remember, regular cleaning helps prevent buildup and keeps your engine running smoothly. Keep up the good work!

Are There Any Environmental Considerations to Keep in Mind When Using Engine Degreasers?

When using engine degreasers, remember to consider environmental impact. Opt for biodegradable products to minimize harm. Properly dispose of waste according to regulations. By being mindful, you can maintain a clean engine and protect the environment.

Can Engine Degreasers Be Used on Other Parts of the Vehicle, Such as the Undercarriage or Wheel Wells?

Yes, engine degreasers can be used on other parts of your vehicle like the undercarriage or wheel wells. Ensure to follow product instructions and rinse thoroughly to prevent any damage and keep your vehicle looking clean.


In conclusion, choosing the right engine degreaser is essential for keeping your engine looking like new. Consider factors such as the type of grease and grime you need to remove, the size of your engine, and any environmental concerns.

The five degreasers mentioned above are highly recommended for their effectiveness and quality. Make sure to follow the instructions carefully for best results and enjoy a clean, shiny engine.