7 Best Engine Degreasers in 2021

We put a substantial investment in our vehicles, so we want to maintain them properly in order to extend their lifespan, as well as limit our number of visits to the local mechanics. Keeping your engine nice and clean should be part of your regular, vehicle maintenance strategy, as when your engine is clean, free from thick, greasy build-up, it also runs cooler.

In fact, mechanics encourage you to keep your engine free from heavy, thick grease in order to prevent possible problems in the future. Choosing the best engine degreaser, might not be an easy task if you are not a car geek, so we’ve made easier for you with our basic introduction to engine degreasers.

What is an Engine Degreaser?

In order to ensure that your engine has a long and healthy life, maintenance must be involved. Part of that maintenance is to keep your vehicle’s engine free from grease, grime, and filth.

In order to accomplish this, we use engine degreasers. Degreasers are cleaners which are formulated to remove the thick build up of grease and road dirt that accumulates on your engine, which not only makes your engine look nice, but also extends its life and helps to avoid some mechanical problems in the future.

A Quick Look at the Top Rated Engine Degreasers

1.(Best Engine Degreasers) Simple Green 19128 Review (Critical Cleaning)Simple Green
8.8 Pound
2.Oil Eater Degreaser Review (AOD1G35437)Oil Eater
8.8 Pound
3.Super Clean Cleaner Degreaser ReviewSuperClean
22.6 Pound
4.Meguiars Super Degreaser Review (D10801)Meguiar's
9.1 Pound
5.Oil Eater Cleaner Degreaser Review (32oz)Oil Eater
2.4 Pound
6.Gunk Engine Degreaser ReviewGunk
17.2 Pound
7.Purple Power Degreaser Review (4320P)Purple Power
10 Pound

7 Best Engine Degreasers Reviewed

1. Simple Green 19128 Review

Simple Green 19128 is a tough, non-abrasive, non-corrosive, non-toxic, biodegradable degreaser that has been designed as an all purpose cleaner. This industrial strength, clean rinsing formula can be used on thick grease and dirt on machinery, metal parts, carpeting, bare floors, walls and more.

(Best Engine Degreasers) Simple Green 19128 Review (Critical Cleaning)
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Industries which use Simple Green 19128 include manufacturing, restaurants, cosmetic, medical, and electronics, among others. This concentrated and cost effective degreaser is NSF registered as A1, A2, A4, A8, B1, C1 and is VOC compliant, butyl-free and phosphate free, and for those with chemical sensitivities, it is fragrance and color free.

If you need an alternative to the regular caustic cleaners, then this non-abrasive degreaser might be the one for you to try. This cleaner is safe to use in areas where food is prepared, so if you own a restaurant, this product will have no problem cutting through the grease on your grills, cooking and smoking equipment.

You may like this Simple Green 19128 for the following Key Features:

  • All purpose degreaser from flooring to machinery.
  • No added fragrances or artificial colors.
  • Non-toxic, non-abrasive, VOC compliant.
  • Concentrated, cost effective and clean rinsing formula.
  • Biodegradable and non-flammable.

Summary: Simple Green 19128 is a cost-effective, non-toxic all purpose cleaner. Industrial strength, NSF registered A1, A2, A4, A8, B1, and C1. Biodegradable, VOC compliant and can be used on flooring, carpets, walls, counters, machinery and cooking surfaces.

It is commonly used on restaurants, medical, cosmetic, manufacturing and electronic industries. This is our favorite degreaser due to its strength, ease of use, non-toxicity, versatility and being free from additives such as color and fragrance.

2. Oil Eater Degreaser Review

Oil Eater AOD1G35437 is a world class, non-acidic, non-toxic, non-flammable multi-surface water based, biodegradeable, cleaning degreaser that is suitable for both household and industrial jobs. Being non-acidic is quite important as alkalinity is what is needed to clean grease by breaking it up into smaller particles, and Oil Eaters pH is above 7.0.

Oil Eater Degreaser Review (AOD1G35437)
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This degreaser is an all purpose cleaner and can be used on everything from septic systems, floors, carpeting, bathroom tiles, BBQ grills, asphalt/concrete driveways, boat hulls and more. If you have stubborn stains on your clothes, you can actually use this cleaner as a pre-wash. With regards to industrial uses, it can be used on engines, machinery, cleaning equipment like floor scrubbers, in garages, among others.

This is a cost efficient cleaner as it’s to be diluted, so be sure to follow the dilution chart on each container’s label to get the optimal cleaning results. Oil Eater works by pulling the oil, dirt, and grime out from the soiled surface, this coupling ability is due to Oil Eaters emulsification properties.

You may Choose this Oil Eater for the following Key Features:

  • Concentrated, biodegradable multi-surface cleaner.
  • Non-acidic, non-toxic and non-flammable.
  • For both household and industrial uses.
  • Non-abrasive.
  • An alkaline cleaner with a pH above 7.0.

Summary: Oil Eater AOD1G35437 is non-toxic, biodegradable, non-flammable, alkaline degreaser. This product can be used for both household and industrial jobs and is suitable for septic systems, carpeting/flooring, grills driveways, laundry pre-wash, and more.

Industrial uses include machinery, engines and manufacturing. This is an overall, good choice for those looking for a product that can handle just about everything, even tough oil spots on your asphalt driveway.

3. Super Clean Cleaner Degreaser Review

If you are in the market for a popular engine degreaser, which has multiple uses, then this is a good choice for you. SuperClean is an industrial strength cleaner which is used for everything from automotive applications, outdoor patio furniture, appliances, a pre-soak on your greasy pots and pans and even your bathroom tub and shower, without leaving a bad odor.

Super Clean Cleaner Degreaser Review
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If you find yourself fixing your car, and get some grease on that shirt, no worries, as SuperClean works well as a laundry pre-soak, as well as your synthetic carpeting, vinyl and tile flooring, but try to keep it away from painted surfaces. After a long summer of grilling, you’ll find that this cleaner has no issue in cleaning your grills and outdoor cutlery, and has even been known to remove tar.

Keep a gallon jug in your garage for use on auto parts, engines, tires, and those filthy rubber floor mats. While it is meant to be diluted to save you money, if you have a tough job, check the label and you may find that you can apply it to the area at full strength.

You may like the Super Clean Cleaner Degreaser for the following Key Features:

  • Effective for stubborn grease.
  • Works quickly and rinses off clean.
  • Excellent for car engines.
  • Multi-use degreaser.
  • Can be used on a variety of surfaces.

Summary: SuperClean 101724 is a top of the line odor free, degreaser for multiple projects. It can be used on engines as well as your synthetic carpeting, flooring or as a laundry pre-soak. This industrial strength cleaner is biodegradable and phosphate free and can be used diluted, or be applied to a tough stain, at full strength. This is a great cleaner to have around the house or garage, as it can handle so many tasks and work on so many surfaces, even porcelain.

4. Meguiars Super Degreaser Review

Meguiar’s VOC compliant, D10801 Super Degreaser is known as one of the best, professional strength automotive degreasers in the business, and it proves it by taking as little as 45 seconds to cut through tough engine grease without leaving any sign of residue stains behind.

Meguiars Super Degreaser Review (D10801)
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This alkaline cleaner is designed with a professional strength formula which works to break apart even tough, baked on grease and grime and rinses away clean and leaves you with a pleasant herbal scent when done. When you decrease your engine with this product it will be sparkling clean with no after residue or spots of grease left over and leave no bad after smell.

This is known as the fastest working degreaser on the market, so in order to obtain the best results, it is important to follow the directions. Once you dilute it, we recommend you use a spray bottle for application, but make sure you have sprayed it on the engine when it is cooled down, then let it sit for about 30 to 45 seconds and rinse. Please note, do not apply the solution and walk away, you cannot let this dry or you will get spots.

Summary: Meguiars D10801 Super Degreaser is one of the more favored brands among professionals. This is a strong and fast acting alkaline degreaser, taking under 45 seconds to complete a task, rinses clean and leaves a pleasant herbal fragrance behind. No residue stains, highly concentrated where 1 gallon of concentrate makes 5 gallons of cleaner. We give this product top marks for speed, efficiency and ease of use.

5. Oil Eater Cleaner Degreaser Review

Oil Eater Cleaner Degreaser, in the 32 ounce spray bottle is composed of a water based formula which is designed to break grease and grime apart into small particles so it can be easily rinsed or wiped away. This non-toxic, color safe, biodegradable product is perfect to decrease your engine and make it shine, almost like brand new.

Oil Eater Cleaner Degreaser Review (32oz)
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This particular product comes in an ‘ultra’ concentrated form so it is not only cost effective, but can be tailored to each and every cleaning task, so you are never using too much, or too little. Simply take a look at the dilution chart instructions, add water and proceed to clean.

What is nice about this degreaser, is that it leaves your room with a gentle, herbal fragrance, so no matter if you are mopping the floor or washing down your patio furniture, you can rest assured you will not have an unpleasant, industrial after smell.

This is a non-abrasive cleaner that does not corrode the surface so you do not have to be concerned about harming surfaces such as your cars exterior, flooring, carpeting or outdoor patio furniture. Other materials that clean up well are many fabrics, asphalt, metal, plastic, stainless steel, rubber, and some upholstery.

You may like the Oil Eater Cleaner Degreaser for the following Key Features:

  • Non-toxic and color safe.
  • Versatile, multi-surface degreaser.
  • Biodegradable, no petroleum solvents.
  • Non-flammable, non-corrosive and non-abrasive.
  • Ultra concentrated, so a little goes a long way.

Summary: Oil Eater Cleaner Degreaser in the 32 ounce spray bottle, is a biodegradable, water based formula which dissolves even the toughest grease and grime from your car’s engine and other surfaces. Ultra concentrated, so a little goes a long way, non-toxic, non-abrasive, and easy to rinse clean. Multi-surface cleaner and can be used on a variety of surfaces such as flooring, carpeting, or patio furniture.

6. Gunk Engine Degreaser Review

Gunk has been making some of the best degreasers for around 55 years now and is considered by many pro mechanics as a go-to engine degreaser. Gunk Foamy engine Degreaser in the 17 ounce bottle works to eliminate dirt, debris, grime and grease from your vehicle’s engine.

Gunk Engine Degreaser Review
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We all know that a clean engine will run at cooler temperatures, and have a longer life span, not to mention look better. GUNK’s foamy formula is designed to remove filth from everything with an engine, including cars, lawn mowers, boats, recreational vehicles, bikes, and farm equipment.

The plus side to using the foam is that foam can hang to vertical surfaces and do its magic, instead of a more liquid spray, which may run off. If you follow directions carefully, you should have no problem using this degreaser on under hood plastic, paint, and rubber.

Remember that when you do use it, to make sure that your engine has been off for a while, so it is cool. Before you apply it to the engine, take precautions to cover any electronic components, the air intake, distributor and carburetor before you apply this foam. Spray on and wipe off, and rinse, it’s that simple.

You may like this Gunk Engine Degreaser for the following Key Features:

  • Quickly and easily removes road dirt, grease and grime.
  • Foam clings to vertical surfaces.
  • Foaming action is quick with little wait time.
  • Can be used on engines with plastic covers.
  • Clean rinsing.

Summary: Gunk Foamy engine degreaser in the 17 ounce bottle will remove the filth, dirt, dust, and grime associated with your vehicle’s engine, and it does it with foam. The foam works by adhering to vertical surfaces, ensuring that it will remove the dirt and grime. Gunk is easy to apply and rinses off easily with your hose.

It can be used on tractors, boats, recreational vehicles, cars and farm equipment. We like this product because of the foaming action, as well as its being a trusted degreaser for mechanics all over the world for half a century.

7. Purple Power Degreaser Review

Purple Power 4320P industrial strength engine degreaser is highly concentrated, phosphate free cleaner which easily and quickly eliminates dirt, grime, grease and oil from your engines surface, and is used in a variety of industries from agricultural, marine, and manufacturing.

Purple Power Degreaser Review (4320P)
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This biodegradable, non-abrasive, non-flammable formula removes even the toughest stains from your car’s engine, so be sure to wear protective gloves when applying and cleaning. This is a versatile degreaser and can go from the garage to the kitchen with ease, so it is a multi-surface product. Known to leave a lovely shine after cleaning, Purple Power also works to create a barrier between the surface and any future stains so they won’t set in quite as easily.

It needs to be stated that while this cleaner is true, powerful and efficient, it needs to be tested first, to ensure that it will not damage surfaces. Surfaces in question include aluminum, painted, and fabrics, and always use with the proper ventilation.

You may like this Purple Power Degreaser Punch for the following Key Features:

  • Cuts through the toughest grease and grime in seconds.
  • Non-abrasive, nonflammable.
  • Industrial strength.
  • Creates a stunning shine.
  • Biodegradable and phosphate free.

Summary: Purple Power 4320P industrial strength engine degreaser claims to be the nation’s number one go-to degreaser. It cuts through the toughest grease and grit within a few seconds. It’s biodegradable, phosphate free, non-abrasive, non-flammable formula rinses off easily and is known to leave a lovely shine.

This is a good, solid degreaser, however take care and read the instructions carefully with this one, as it can damage some surfaces, such as aluminum, paint and fabrics, and it is also hazardous to breathe so use in an open area.

How Much is Engine Degreaser?

Engine degreasers vary in price from 12.99 to 50.00 or so. One of the factors which influence the price is the size of the container, which can come in convenient spray bottles, or in large gallon bottles. Also, if you happen to prefer a brand that is specialized and not that readily available, prepare to pay a little extra as well.

How to Choose Degreaser for Car Engine?

For those who are not car geeks, the thought of choosing an engine degreaser can be a daunting experience, especially with the large variety of brands on the market. While it seems to be confusing, you can break it all down to a few, basic common sense factors, and we’ve taken the opportunity to list a few of those factors here for you today.

By taking into consideration the toxicity, versatility, and ease of use, surface composition, as well as examining our list of the best car engine degreaser, you will be able to find just what you need with minimal hassle to you.

Non-Toxic and Eco-friendly: Make certain that you choose an engine degreaser is able to both clean and maintain your engine and is safe to use around your environment, family, and pets. When you read the content label should state ‘non-toxic’ and biodegradable, and VOC compliant. There are plenty of eco-friendly degreasers on the market from which to choose, and we have a few of them on our review.

Versatile Means Money Saving: Many top engine degreasers are also very versatile when it comes to doing other jobs around the house. As most engine degreasers come in a concentrated form, a little goes a long way, so take advantage of this. Check the label before you buy, and if you can also use that degreaser to attack everything from laundry stains to patio furniture, it is definitely a money-saving, win-win for you.

What Surfaces Can it be Used On?: This is important, as you want to make certain that your degreaser won’t damage surfaces it comes in contact with. While many degreasers are formulated to work on almost any surface and material, there are a few, such as Purple Power, that will do damage to painted surfaces or fabrics.

So, check the label before you purchase a degreaser, to ensure that the product is safe to use for not only metal but rubber, plastic parts as well. This also ensures that nothing under the hood will suffer accidental damage if the degreaser comes in contact with it.

Odor Free, Clean Rinsing and Affordable: Read the bottle carefully, as there are some degreasers that may generate a harmful or unpleasant odor. For the sake of the environment, your family, pets and your own health, try to choose a degreaser that does not have an odor, or has a pleasant scent added, and has no harmful vapors.

The residue is another concern, so look for a brand that will rinse clean and not leave unpleasant white streaks or spots on your engine. Affordability depends on how much you are willing to spend, so it’s a good idea to look for the most versatile degreaser that can handle many tasks, that comes in a concentrated form so a little goes a long way.

How to Use Engine Degreaser?

Now that you have a good, basic idea about degreasers, what they do and the best brands on the market, it’s time to actually apply the degreaser to the engine and let it do its job. We have included a basic guideline to help you get started, to give you a rough idea of how the process works.

However, always remember that first and foremost, you must follow the directions on the label of your particular engine degreaser in order to achieve the optimal effect of a bright, shining and stunning grease free engine.

Gather Your Materials and Position Your Car: Read your label and see exactly what it is they state you need to get started. Generally, you will probably need your degreaser, a long handled brush, duct tape, rags to clean with, and plastic bags to toss them into.

A reservoir tray and oil absorbing granules are useful as well to catch any runoff. Remember, that it is illegal to have any degreaser enter our water supply. You never want to start the cleaning process on a hot engine, to do so will cause damage to the engine.

We recommend that you park your car in a nice sunny spot and let the engine cool. The sun will warm your engine nicely and evening while you clean. If you can, take your vehicle to a self-service car wash to clean your engine, as these establishments actually catch the runoff and can dispose of it properly.

Reservoir Tray Placement and Sealing of Electrical Parts: Even though most of today’s engine degreasers are non-toxic and biodegradable, it is still not a good idea to allow the runoff to enter our environment and risk contaminating our water supply. Take the reservoir tray and place some oil absorbing granules inside.

Next, place the tray so that it will catch the runoff. At this point, you want to start to use the plastic bags and duct tape to seal off the parts of the car you do not wish to get wet. Look under the hood for parts such as the air intake, alternator, distributor, or filters and seal them up. Remember, if these parts get wet from the cleaning, your car may not start until they dry out.

Application of the Degreaser: Follow the directions on your particular product, diluting if necessary, and begin to clean from the bottom and then work up towards the top, moving quickly because if the degreaser dries on the engine, you’ll have spots.

Leave your degreaser on for the prescribed time, and then proceed to hose off the degreaser. A hose is preferred, as there is a risk of damaging engine parts if the pressure spray is too high, so keep it gentle. Take a clean towel and dry your engine, then go and start your car and let it run for 5 minutes, as this will dry things up a bit.

Clean Up: Depending on your particular product, the cleaning process may vary, but all in all it is a quite simple procedure. Next, remove all the plastic and tape from the engine, take your reservoir, rags and anything else that may have the degreaser runoff, and dispose of it the proper way.You cannot simply toss this in the trash, so if you are unsure, contact your local auto parts establishment and they can help, and even dispose of it for you if you want.

Follow Up Care: Once you have cleaned your car’s engine to your satisfaction, it is a good idea to add engine degreasing to your vehicles maintenance plan of action. When you institute a regular plan, you’ll be surprised at how easy the and fast the process becomes. For follow up care, gather a few rags, a spray bottle of clean water, and a spray bottle of diluted engine degreaser. Take precautions to protect your cars engine components that you do not wish to get wet.

Next, take the bottle of diluted engine degreaser and lightly spray the engine, and wait the prescribed amount of time. Finish by spraying with the clean water, and wiping it clean with a towel. If you perform this engine maintenance on a regular basis, you can avoid any future issues of a filthy, heavily grease laden engine to clean.

The Final Thought (Conclusion)

We hope you’ve enjoyed our rundown on the best engine degreasers available on the market, along with some pertinent, sound and solid information on what constitutes the quality of each degreaser from its nearest competitor.

Each of the products listed in our review have a proven track record with regards to their performance and customer satisfaction ratings. In the end, it’s all about your car, and doing everything in your power to help it to run smoothly, and efficiently, and keeping your engine clean and shining, is part of that overall maintenance.

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