Best Engine Degreaser Reviews 2020 | Know Before Buying

Your car engine does a lot of work and is prone to be in a messy condition that involves stains from grease and oil. Dust and other forms of dirt are often attracted by the grease and oil, which makes your car engine more unsightly.

Being prone to stain doesn’t justify giving your car engine minimal maintenance attention. Instead, you should keep your car engine clean and void of grease and oil by using an engine degreaser. This would not only make your car engine aesthetically appealing but would improve the efficiency and performance of your car engine because engine degreaser makes your engine run better and last longer.

For instance, when you drive a car with a clean engine, some issues like leaks, etc. would be revealed early enough before they deteriorate into complex issues that could either lead to additional engine damage or unnecessary spending. As you can now see, using car engine degreaser is very important.

However, with the rate of proliferation of engine degreaser nowadays, choosing the best engine degreaser is not easy. Some so-called engine degreasers out there are either adulterated or too strong and may cause your car engine to corrode. Since using the best car degreaser is very important for the clean appearance, health, and efficiency of your engine, this article presents to you six best engine degreasers of 2020 for your car you can choose from.

Best Engine Degreaser Comparison Table

ImageNameVolumeUsed InDetailsAction
KRUD KUTTER KK32 Original Concentrated Cleaner/Degreaser, 32-Ounce
1 Gallon
floors, walls, industrial equipment, appliances
DetailsCheck Price
Simple Green Pro HD Heavy Duty Cleaner Concentrate 1 Gallon Bottle
1 Gallon
floors, walls, industrial equipment, appliances
DetailsCheck Price
S100 12005L Total Cycle Cleaner Bottle - 1.32 Gallon
1.32 Gallon
cleaning marine, lawn and garden equipment, snowmobiles
DetailsCheck Price
Purple Power (4320P) Industrial Strength Cleaner and Degreaser - 1 Gallon
1 Gallon
home, marine, farm and shop
DetailsCheck Price
Simple Green 19128 Crystal Industrial Cleaner/Degreaser, 1 Gallon Bottle
-
-
DetailsCheck Price
Adam's Heavy Duty All Purpose Cleaner & Degreaser - Powerful, Professional Strength Formula That Easily Cuts Heavy Grease & Tar, Tire Cleaner, Engine Bay Cleaner, and More (16 oz)
16 OZ
fender wells, tires, brake dust, wheels
DetailsCheck Price

KRUD KUTTER KK32 comes in a 32 fl. Oz. trigger spray. According to the manufacturer, this product is a super concentrated engine degreaser. It is very effective to eliminate tar, grime, cut grease, and oil from all car parts within minutes and not the engine alone. This engine degreaser is very popular for a number of good reasons.

KRUD KUTTER KK32 Original Concentrated Cleaner/Degreaser, 32-Ounce

Features

Versatility: This product is incredibly versatile – aside from working as an engine cleaner, it can also eliminate greasy or oily stains from various external surfaces, including fabric. KRUD KUTTER KK32 boasts as the only single product that is capable of quickly and effectively removing really tough stains from many various surfaces.

Interior and Exterior Use: This product can be used to clean both the interior and exterior of your automobile. It is not harsh on car paints, leather, plastic, rubbers, etc. Aside from removing greases and grime from engine, it also removes stain from exterior parts of the car.

Concentrated With Commercial Strength Formula: With KRUD KUTTER KK32, expect your engine to look clean and shiny as long as you use full strength (not diluted). Though this product is super concentrated and harsh on grease, it is very safe for daily use.

Not Harmful: This product is very safe. It is water-based biodegradable, non-abrasive, non-toxic, and non-flammable. It does not contain harmful chemicals like xylene, ammonia, bleach, and does not release noxious vapors or harsh fumes. More so, it is environmentally friendly as it doesn’t contain inorganic phosphates or any hazardous solvents.

User-friendly and Fast: If you are looking for a very fast and user-friendly means to degrease your engine, think KRUD KUTTER KK32. Simply spray the product on the affected area, allow few minutes to work, then use a brush to scrub the area clean. As long as you follow the direction of use, this product works effectively and has no shortcoming.

Pros
  • Excellent for multipurpose and multi-surface applications
  • Biodegradable and free of toxic chemicals
  • Application brush included in pack.
  • Very easy to apply and scrub off.
Cons
  • Though concentrated, may not be the best option for stubborn greases and stains. 
  • Requires scrubbing to eliminate grease.
  • Some claimed that the product is not so good at removing oil stains.


Simple Green Pro HD comes in a one gallon bottle. This professional-grade engine cleaner and degreaser is designed to offer an effective degreasing cleanup for engines and other car interiors. It is specially designed to break down tough grease, oil, and grime.
Simple Green Pro HD Heavy Duty Cleaner Concentrate 1 Gallon Bottle

Features

    Versatility: this product is a multipurpose all-in-one engine degreaser and cleaner. It is also non-degrading to plastic so any plastic part in your car engine is also safe. Aside from cleaning the engine, this product can also be used to safely clean the automotive fabrics. This product also works fine at cleaning other materials around the home in kitchens and bathrooms.

    Non-corrosive: another big advantage of Simple Green Pro HD is that it is non-corrosive to any type of metal and even stainless steel. This means as you use the engine degreaser on your engine, it will not corrode your engine metal.

    Very safe: a big relief is that Simple Green Pro HD is non-toxic and biodegradable, which makes the product a lot safer for daily use. If you need a safer alternative to solvents and other harsh cleaning chemicals for your car engine, consider Simple Green Pro HD engine degreaser. It is also non-flammable and non-toxic.

    Crystal Clear: though it bear the name “Simple Green,” the product is crystal clear. It is water-based and has no added colors or fragrances. Hence, it constitutes no pollution and of advantage to those who work inside poorly ventilated areas.

    Very strong and fast: the product is highly concentrated, so it is recommended that you dilute it to suit your specific needs

        Pros
        • Multipurpose and multi-surface. Can be used for a range of purposes –car engine, bathroom, kitchen surface.
        • Highly concentrated.
        • No added fragrances or colors.
        • Biodegradable
        • Washes off easily.
        • Easy application
        Cons
        • Useful for washable surfaces only.
        • Must be rinsed off properly afterward.
        • May not be as effective as the other Simple Green industrial cleaner


        This product is the first spray-on and rinse-off cleaner that is specially designed to degrease any type of engine – motorcycles, industrial, cars, trucks, etc. it offers the most effective performance and leaves your engine sparkling clean. Some of its features include:
        S100 12005L Total Cycle Cleaner Bottle - 1.32 Gallon

        Features

          Fast and efficient: Engine degreasing is not usually the easiest of chores, that is why S100 12005L Total Cycle Cleaner creeps into every nook and cranny of your engine to eliminate grease and grime and clean it thoroughly without scrubbing. This is a major advantage of this product over other engine degreasers and cleaners.

          Interior and exterior use: S100 12005L Total Cycle Cleaner doesn’t work on the engine alone, you may choose to clean the whole part of your motor with it to achieve a sparkling result.

          Versatility: The product is mild on any surface in your engine – metal, Paint, Chrome, Alloy, Plastic, Rubber, Bearings, O-Rings,

          Safe to use and handle: Safety is also one of the greatest strengths of this product – It is non-toxic, non-acidic, biodegradable, pH-controlled, and contains corrosion inhibitors. Which means it is very safe on you and your engine.

          Optimum customer satisfaction: When it comes to customer satisfaction, S100 12005L Total Cycle Cleaner easily outshines most other engine degreasers and cleaners in the market.

          Easy to use: the product is an easy spray-on, rinse-off engine cleaner and degreaser.

              Pros
              • It can be used on all parts of the engine – works on a range of different engines and automobile
              • It works efficiently.
              • Very easy to apply and rinse off afterward.
              • Can be used on all surfaces.
              • It sticks even to vertical surfaces.
              Cons
              • It is flammable – adequate care must be taken to avoid a potential fire hazard. 
              • It is not a heavy duty cleaner for stubborn grease.
              • The spray nozzle opening is small and doesn’t cover a large area when spraying.
              • The spray pump is a little bit sturdy so repeated spraying might be a bit tiring.


              Do you want to eliminate your engine grease and dirt immediately? Trust dual power Purple Power Industrial Strength Engine Cleaner and Degreaser. This product effectively eliminates grease, oil stains, lubricants, grime, and any other stains it comes in contact with on auto, farm, marine, and home engine, even the really tough stains.
              Purple Power (4320P) Industrial Strength Cleaner and Degreaser - 1 Gallon

              Features

              Multi-surface: This product works great on almost any interior surface on an engine and motor. Also, its applications spread across other areas such as farm, homes, etc. it also cleans aluminum, painted surfaces and fabrics when diluted.

              Safe to use: Purple Power Industrial Strength Engine Cleaner and Degreaser is non-abrasive, non-toxic, non-abrasive, biodegradable, and phosphate-free.

              Very effective: The product is highly concentrated and quickly penetrates through the toughest grease that ever exists and creates a barrier between the grease and the surface of the engine being cleaned. This barrier prevents future stains or greases that may form.

              Selective application: the product is suitable for interior surfaces only. It is not suitable for all surfaces. So, avoid contact with exterior car surfaces, such as painted surface, glass, and wheel rims.

              Pros
              • It starts eliminating greases immediately after being applied.
              • It eliminates greases on a wide variety of surfaces.
              • It is phosphate free.
              • Has strong power for fast cleaning
              • Takes just a few seconds to clean.
              Cons
              • Not suitable for exterior cleaning. Must not be used to clean exterior car surfaces, painted surfaces, glass, wheel rims, etc.
              • Must be used in well-ventilated area.


              Simple Green 19128 Crystal Industrial Cleaner/Degreaser is a very strong yet safe engine degreaser and cleaner that eliminate the toughest greases, grime, lubricants, stains, and oil from washable surfaces of your engine. It boasts as the best fuel injector cleaners.
              Simple Green 19128 Crystal Industrial Cleaner/Degreaser, 1 Gallon Bottle

              Features

                Strong and efficient: The product is concentrated. This makes it to speedily and efficiently remove grease, oil, lubricants, and grime. It must be diluted as per use.

                Easy rinsing: The product requires rinsing and is made to rinse easily. That is why Simple Green 19128 Crystal Industrial Cleaner/Degreaser is perfect only for washable surfaces and is suitable for pressure washing and steam cleaning.

                Completely safe to use: Although the product is concentrated, it is completely safe to use. It is non-toxic, non-hazardous, and biodegradable. It does not add fragrance or color to the engine part. This makes the product safe and suitable to be used for food-preparation engines too.

                Harmless: The product is very strong because it is an engine degreaser as well as an engine cleaner. However, it is non-corrosive, non-abrasive and non-flammable and complies with environmental safety standards.

                    Pros
                    • Concentrated formula suitable for deep cleaning
                    • No fragrance, no color.
                    • Very safe to the environment.
                    • Multipurpose
                    • Can be easily diluted with water.
                    Cons
                    • Useful for washable metal surfaces only.
                    • Must be rinsed off properly afterward.
                    • May not be as effective as the other Simple Green industrial cleaner.


                    Adam’s Heavy Duty All Purpose Cleaner & Degreaser comes in a five-gallon keg. This product is fully effective, safe, and suitable for all surfaces. The product is versatile and powerful enough to eliminate tough grease buildup or stubborn stains from any surface. Though, it must be diluted before using on extremely gentle and sensitive surfaces.
                    Adam's Heavy Duty All Purpose Cleaner & Degreaser - Powerful, Professional Strength Formula That Easily Cuts Heavy Grease & Tar, Tire Cleaner, Engine Bay Cleaner, and More (16 oz)

                    Features

                  • Highly effective: Adam’s Heavy Duty All Purpose Engine Cleaner & Degreaser is equipped with Nano Technology, which enables the product to effectively remove the toughest grease, grime, dirt, and tar at the molecular level.
                  • Interior and exterior application: This product does not work on the engine alone, it is also very effective on external car parts. When diluted up to 90 percent, the product can be used to clean the engine bays, fender wells, tires, brake dust, wheels, exhausts tips, polishing pads and applicators, oxidized plastic and rubber, car upholstery, etc.
                  • Versatile: Aside from automobiles, the product is also safe to use at home in a diluted form. Another feature that makes Adam’s Heavy Duty All Purpose Engine Cleaner & Degreaser is that it can be used as a decontaminant. That means the product can clean surfaces that have been contaminated by microorganisms.
                  • Safe: the product is biodegradable and non-toxic but must be handle with care.
                  • Pros
                    • All-purpose degreaser and cleaner. You can use it for a range of purposes.
                    • Nice Citrus Scent
                    • Has Nano Technology to remove grease and other dirt at a molecular level
                    • Function also as a decontaminates
                    • Full strength, heavy-duty formula
                    • Ultra- Concentrated
                    • Multi-surface and multipurpose
                    Cons
                    • Must be diluted to clean delicate surfaces
                    • Requires scrubbing, so must be paired up with your favorite brush or microfiber cleaning cloth to clean the engine or body parts of your car, truck, boat, RV, and motorcycle.


                    Best Engine Degreaser Buying Guide:

                    The list above presents engine degreasers that are proven to work best at removing greases, oil, and stains from any motor engine right now. Choosing any of the engine degreasers above will do your motor engine good. However, the main question is, which one would be the best engine degreaser for your particular engine? This means that an engine degreaser may perform better than another considering the type of engine you want to use it for.

                    Hence, choosing the best product to degrease your engine is not particularly fun, and you must be really sure that the product you want to invest in the kind of product that will make the cleaning job as straightforward and simple and as possible.

                    That is why this article goes further to present buying guide for the best engine degreaser. This will help you to understand all the essential features to look out for when selecting the best engine degreaser.

                    Essential Factors to consider include: Surfaces the Degreaser Can Be Used On: this is a very important factor to consider. Before you choose an engine degreaser, carefully consider the types of surfaces the engine degreaser can be used on. Some products only work best on metallic surfaces but are very harmful when applied on other surfaces like plastics, rubbers, painted surfaces, etc.

                    If you only need to degrease and clean the metallic surface of an engine, you may opt-in for only those products that work on metals only. Otherwise, multi-surface engine degreasers and cleaners are the best to clean all interior and exterior surfaces of automobiles.

                    Purposes the Degreaser Can Be Used For: Some products are highly concentrated and are intended to be used on tough grease and stubborn stains only. Such products cannot be diluted and may be too harsh on some car parts with less dirt. However, some other engine degreasers can be diluted to effectively work for different purposes. These are known as multi-purpose engine degreasers and can clean a wide range of surfaces.

                    The Smell of the Degreaser: Some engine degreaser products are odorless and do not give off any smell. However, some degreaser products, especially petroleum-based engine degreasers and cleaners, give off a pretty bad smell. If you choose a degreaser that smells, you may need to invest in a nose mask to block the odor. However, some engine degreaser products with strong odor have added perfume with a nice smell to override the bad smell. So, whether you need a product that gives off odor or not depends on you!

                    The Size and Price of the Degreaser: The size and price always go together. Some products in large gallon-size containers are sold for relatively low prices while others in smaller packs are more expensive. The question is, is the low price tantamount to the cleaning power? Though the prices or sizes of some engine degreaser do not determine their degreasing power, the potency of some other products depends on their prices and sizes. For instance, some products in larger packs may be diluted already and are not as concentrated as some in a smaller pack.

                    The Safety of the Degreaser: You must be cautious about the safety condition of the degreaser. If you see words like flammable, corrosive, toxic, and other cautious words on the labels of a product, it is advisable to avoid such a product. You should also choose a degreaser that will not cause you any harm or damage any part of your engine.

                    Another essential factor to consider is the engine degreaser type

                    There are basically two common types of engine degreaser, which are: Petroleum-based degreasers and Water-based degreasers. Examples of the two types are listed above. Both petroleum-based engine degreaser and water-based engine degreaser have their pros and cons. Understanding the pros and cons of each type will help you in deciding which product type is better for you.

                    Petroleum-based Engine Degreaser: This type of degreaser is immiscible with water and is usually cheaper than a water-based cleaner. It does not require the high-end formulations found in water-based degreasers. This makes it stronger and powerful degreasing product.

                    Petroleum-based degreasers are typically the best for most people because they are the most effective in eliminating most types of grease and grime. They contain petroleum distillates and ethanol, which makes it easier for them to get rid of gasoline stains, lubricants, brake dust, and oil pretty easily.

                    However, it is more abrasive and must be carefully applied. Most petroleum-based products are not multipurpose or multi-surface (except where the product specifically states it is safe on all surfaces). Hence, any runoff onto painted, rubber, plastics, and chrome surfaces must be wiped away quickly.

                    Key Features

                    • Cheaper
                    • Stronger and powerful
                    • Mostly odorless
                    • Are not always suitable for multi-purpose and multi-surface use
                    • Less environmentally friendly
                    • More toxic and dangerous to handle
                    • Can damage car paint and other car parts if not carefully applied
                    • Contains bad “chemical” odor

                    Water-based Engine Degreaser: This type of degreaser is naturally much milder and gentler than the petroleum-based products. It is more expensive since it requires more high-tech formulation to be an effective cleaning agent to tackle grease and oil. It is also gentle on most surfaces. So, it is mostly suitable for multipurpose and multi-surface use. You don’t need to panic when a water-based degreaser run off onto other surfaces in your car. It is also environmentally friendly too. The downsides of water-based products are that they are more expensive, have bad odors (though nice scent has been added to some to suppress the bad odor).

                    Key Features

                    • More expensive
                    • Not so strong and powerful. Hence, safer for a wider variety of uses.
                    • Are suitable for multi-purpose and multi-surface use
                    • Environmentally friendly
                    • Requires better technology to be as powerful as the petroleum-based products

                    Foaming Engine Degreaser: This type of degreaser makes up the minority of engine degreaser products. However, they can still be found around. Foam degreasers can either be petroleum-based or water-based. But it differs from the other two types because it does not require rinsing the applied surface with water. Instead, the foam is sprayed and left to eat away at the grease after which the surface is wiped dry. This type of degreaser sticks better to the surface of the engine than any other types of degreasers.

                    Key Features:

                    • More expensive than other types
                    • Sticks better to the engine surfaces than other types
                    • Very simple and easy to use – simply spray and wipe

                    Best Engine Degreaser FAQ:

                    What Is The Best Engine Degreaser?

                    Well, there is no one best engine degreaser for all engines because each engine and each engine owner have a different need. But the good news is, you will always find an engine degreaser that is right for your type of engine no matter what your needs are.

                    Are you environmentally conscious? Water-based engine degreaser products are a great choice for you. This product is also better for you if have a newer vehicle. However, petroleum-based engine degreaser products are a great choice for you if you want to save money. They are also very powerful to break down even the toughest grease. You can opt-in for the foam option if you are the more restricted.

                    What Is The Most Powerful Degreaser?

                    The most powerful degreaser is the petroleum-based engine degrease. It is very strong and powerful to eliminate the toughest greases, grime, lubricants, oil, and stubborn stains. Adequate care must be taken when applying this type of degrease as it may be harmful to other engine surfaces.

                    What parts to cover when cleaning an engine?

                    When you are about to clean your engine, make sure that you first cover the sensitive parts of the engine like the inlet holes of any air intake system, the Carburetor, all electrical parts, filters, all electronic components and wires, the distributor, etc.

                    More so, carefully read the product description to know if the degreaser product is suitable for multi-surface use (internal and external surfaces) and multipurpose use (all engine parts). Also, check if the product is corrosive or not. This will guide you on what parts of the engine to cover.

                    How to Clean an Engine?

                    When you are about to clean your engine, make sure that you first cover the sensitive parts of the engine like the inlet holes of any air intake system, the Carburetor, all electrical parts, filters, all electronic components and wires, the distributor, etc.

                    More so, carefully read the product description to know if the degreaser product is suitable for multi-surface use (internal and external surfaces) and multipurpose use (all engine parts). Also, check if the product is corrosive or not. This will guide you on what parts of the engine to cover.

                    What Is The Best Natural Degreaser?

                    The known best natural degreaser is Lemon oil. Lemon oil is peculiar for its wonderful ability to clean. It is known to naturally break down grease. It often added to over-the-counter cleaners. Applying lemon oil to the greases on your engine can help to degrease the engine.

                    Can the Car Paint Be Damaged By An Engine Degreaser?

                    Damaging the car paint depends on the engine degreaser product. Some degreasers are not safe for external surfaces including car paint and there are some that are suitable for all surfaces, including painted surfaces. So, it is always best to carefully read the product’s label to know how best to use the product and avoid damage to your car paint.

                    Conclusion

                    This article has listed the best engine degreasers that you can choose from to clean your car engine. Although all the products can serve in the best way, you are the one who will need to choose the product that suits your preference. While the purpose of your work will go a long way in influencing your choice of the best engine degreaser, reading the buying guide above will also help you to make a better decision.

                    The FAQs section also provides answers to some common questions that may arise when you decide to purchase an engine degreaser. So you need wait no longer, go to our list above and get for yourself the best engine degreaser today! Do you have any questions regarding engine degreasers? Let us know in the comments section, and we’ll be sure to answer you as soon as possible. Other than that, if you have any other thoughts or experiences you’d like to share for others to learn from, then please do that as well. We always love hearing back from our readers!


                    Thanks for reading this post. If you have any opinion don't hesitate to comment here. Also please subscribe our newsletter to get more updates.