Best Degreasers for Engine Bay Cleaning & Detailing

Video Best Degreasers for Engine Bay Cleaning & Detailing

If that is your first time studying up in regards to the sensitive topic of engine bay cleansing, buckle up! We’re about to bust some myths and suggest a number of the greatest engine bay degreaser choices available on the market.

There’s nothing sexier than a squeaky clear engine bay. However extra importantly, spending all that point up shut along with your automobile will convey to gentle points resembling oil leaks or broken automobile components.

Regardless that you’re most likely not severe issues, it’s all the time a good suggestion to rid your engine bay of something that doesn’t belong there, like mud, grime, grease and undesirable fluid residue.

So if it’s been some time since your automobile has had a very good element, or if it’s been sitting with out being pushed for a while, it’s time to present it the find it irresistible deserves. On this information, we’ll take you thru the correct approach to clear your engine bay, and we’ll checklist a number of the greatest engine degreasers you can purchase proper now.

Greasy hands from changing a spark plug
In case your palms seem like this after merely altering a spark plug, it’s time to degrease your engine bay (and get some mechanic’s hand cleaner)!

The Greatest Engine Degreasers You Can Purchase

When you’re simply right here for solutions, let’s soar proper into it! The entire merchandise that you simply’ll discover on this checklist will do an awesome job. That stated, there are just a few that stand out and are the best merchandise for his or her respective use instances.

Greatest Clear for the Cash: 3D Grand Blast

3D has executed an awesome job with this product. By way of pricing and effectiveness, that is most likely one of the best degreaser we’ve come throughout. In its concentrated kind, it really works effectively for heavy-duty functions, however you can too dilute it to 10:1 for gentle cleansing.

If You’re On a Finances: WD-40

WD-40 has been a staple title within the repairs and upkeep trade worldwide. It’s no shock that their extremely efficient, but reasonably priced industrial-strength degreaser works wonders.

What’s extra, is that it’s extraordinarily reasonably priced and you may all the time purchase in bulk to avoid wasting extra.

For the Most Detailed Clear: Gunk Engine Brite

In order for you a product that may get into each nook and cranny of your engine bay, you want one which has an aerosol set off. Gunk Engine Brite is specifically designed for older engines and works extraordinarily effectively for eradicating caked-up grease that’s has been sitting for ages.

Need extra data? Learn on! We’ve compiled a listing of a number of the best possible engine bay cleansing merchandise for you. Every of them are cheap and available.

Chemical Guys Orange Degreaser

Producer: Chemical GuysHalf Quantity: CLD_201_16Merchandise Quantity: 16 ouncesPurchase On: Amazon

The beauty of the Orange Degreaser is that you should utilize it not solely on engines but in addition on equipment, instruments, and tires.

Chemical Guys use a citrus-based system that works very well and emulsifies all types of grease, oil, and filth with ease. You possibly can lengthen the usage of the product by diluting as much as 20:1 for lighter cleansing jobs.

It’s barely expensive in comparison with others on this roundup, particularly contemplating that you simply solely get 16-ounces, but it surely works like a allure.

WD-40 Specialist Cleaner & Degreaser

Producer: WD-40Half Quantity: 300349Merchandise Quantity: 24 ouncesPurchase On: Amazon

The multi-surface degreaser by WD-40 is biodegradable and has a non-aerosol set off. You’ll discover that it’s straightforward to make use of due to the sturdy, shatter-resistance set off and the handy refill port.

You need to use this product on glass and totally different metals like copper, aluminum, and chrome steel with out worrying about etching or corrosion.

When you do occur to get some oil on glass, you should utilize this product with out worrying about any injury. Metallic, copper, and aluminum gained’t corrode or rust both.

Moreover being non-corrosive, WD-40’s degreaser can be non-flammable, non-abrasive, and has an inoffensive odor. However one of the best a part of this product is its reasonably priced price ticket.

3D Grand Blast

Producer: 3D Automobile Care MerchandiseHalf Quantity: ‎100G01Merchandise Quantity: 128 ouncesPurchase On: Amazon

3D Grand Blast is a heavy-duty degreaser that you should utilize on engines, equipment, and instruments. One factor we actually like about this product is that it makes use of no-harm Prop 65 accredited components, making it eco-friendly.

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You’ll discover that it loosens up grime and grease surprisingly rapidly. It’s additionally protected to make use of and straightforward to rinse on painted surfaces.

Regardless that it’s a heavy-duty degreaser, you’ll be able to dilute it 10:1 for gentle cleansing. In any other case, we suggest choosing a 4:1 dilution if you have to do heavy cleansing.

Gunk Heavy Obligation Gel

Producer: GunkHalf Quantity: EBGELMerchandise Quantity: 15 ouncesPurchase On: Amazon

When you’ve obtained an older automobile, the Gunk heavy-duty gel is ideal for you. Older vehicles are likely to have a ton of grease and dirt baked onto the engine floor, and that is simply the product you want for an utility like that.

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Engine Brite doesn’t run off and drip all over the place — it stays on while you spray it, giving it sufficient time to penetrate by even the hardest engine soils. That is because of Gunk’s “rheological” components that enable the product to cling to vertical surfaces.

When you’re involved about Risky Natural Compounds, this product meets all state necessities with contents underneath 35%. What’s to not love?

Adam’s All-Goal Cleaner

Producer: Adam’s PolishesHalf Quantity: 810004211131Merchandise Quantity: 16 ouncesPurchase On: Amazon

Adam’s All-Goal Cleaner is a heavy-duty degreaser that works effectively to take away even the hardest grease and dirt. For extra delicate functions, Adam’s Cleaner might be diluted as much as 90% with water.

Utilizing this product with a brush is really useful. After utility, you should utilize a robust water blast to rinse away grease.

If the entire grime doesn’t come out within the first wash, you’ll be able to repeat the cleansing course of to get optimum outcomes.

Oil Eater

Producer: Oil EaterHalf Quantity: AOD1G35437Merchandise Quantity: 128 ouncesPurchase On: Amazon

Oil Eater not solely works effectively to take away engine oil however aggressively removes grease and different substances that cling to your engine. Regardless of being so efficient, Oil Eater could be very protected to make use of. It doesn’t comprise petroleum or abrasive solvents and is 100% water-based, that means it’s additionally biodegradable.

You don’t have to fret about it damaging your engine components as it’s non-corrosive and non-hazardous because it’s USDA accredited.

To do away with grime that has constructed up over lengthy durations, use it as a heavy-duty cleaner by limiting the water combine. On lighter surfaces, you’ll be able to combine extra water to make the product last more with out compromising how effectively it really works.

Meguiar’s Tremendous Degreaser

Producer: Meguiar’sHalf Quantity: D10801Merchandise Quantity: 128 ouncesPurchase On: Amazon

Though Meguiar’s degreaser works effectively to take away grease rapidly and with minimal effort, you don’t have to fret about damaging any of your components or parts.

To be used on lighter surfaces, you’ll be able to dilute it to an answer of 10:1, and it’ll work simply as effectively. Not solely does it work onerous, but it surely’s additionally residue-free. The free-rinsing system of this degreaser helps to stop white residue stains.

As a result of it’s efficient, it’s quite simple to make use of. All you do is spray it on and wipe away the grease and dirt. No onerous scrubbing is important.

Tremendous Clear Robust Process Cleaner

Producer: Tremendous ClearHalf Quantity: 309017Merchandise Quantity: 17.5 ouncesPurchase On: Amazon

In case your engine has filth and dirt baked on metallic surfaces, Tremendous Clear’s Robust Process Cleaner is the best product. Like others, that is an aerosol spray degreaser that may straight goal the spots with grease and dirt build-up whereas avoiding the mess.

It is a extremely efficient product that cleans simply, so you’ll be able to put in minimal time and effort whereas nonetheless getting a deep clear. It’s additionally protected to make use of as it’s biodegradable and phosphate-free.

As a result of you’ll be able to direct the applying to the precise spots, you don’t have to fret about damaging your engine consumption or different components. The high-pressure stream works effectively to take away filth from recesses and corners.

Sonax Engine Cleaner

Producer: SonaxHalf Quantity: 543200-755Merchandise Quantity: 17 ouncesPurchase On: Amazon

Sonax has manufactured the proper engine degreaser that helps to take away powerful oil and grease stains, even by mud. It additionally works simply as effectively on vertical surfaces because it does hard-to-reach spots.

It is ready to take away the hardest engine gunk rapidly and successfully, but it surely’s additionally protected to make use of because it’s phosphate and solvent-free.

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After you’ve sprayed on Sonax, look ahead to 3 to five minutes for it to seep into the grease, then rinse it off with a robust water blast. Keep in mind to not use the product in direct daylight or sizzling surfaces although.

Spray 9 Grez-Off

Producer: Spray 9Half Quantity: 22732Merchandise Quantity: 32 ouncesPurchase On: Amazon

Spray 9 has produced a heavy-duty degreaser that’s non-flammable, non-acidic, and biodegradable. It doesn’t comprise petroleum solvents or disagreeable odors both.

You possibly can depend on Grez-Off to supply a fast and efficient answer to your greasy engine bay gunk, but it surely additionally works on instruments, storage partitions, and different electrical home equipment.

Spray 9 is a water-based cleaner that’s USDA-approved. This implies it could require some scrubbing to get the actually cussed grease out. After you’ve utilized the product, wait as much as quarter-hour for it to settle into the filth earlier than you rinse. When you’re unhappy with the outcomes after the primary utility, repeat the method.

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Engine Bay Detailing — Continuously Requested Questions

The rationale we known as engine bay detailing a sensitive topic is that there’s quite a lot of misinformation on the market. There are lots of methods to do it proper and some ways to do it fallacious.

The cleansing methodology you select comes all the way down to what automobile you drive. The top consequence ought to be a clear engine bay with none injury to the engine, or any electrical parts.

Beneath are some frequent questions that individuals ask about engine cleansing and the merchandise related to it.

Is It Protected To Spray Water Into My Engine Bay?

Whether or not you must do that or not largely is determined by what automobile you drive. In contrast to outdated vehicles, nearly all trendy vehicles have protected air bins and weather-proof wiring connectors. Automakers do their greatest to design engine bays which are sealed off from the weather.

That stated, don’t spray 2500 psi of water an inch away out of your alternator. It’s not all the time greatest to make use of a strain washer to wash your engine bay. When you should use one, be sure to maintain it on a low setting and preserve enough distance from the engine whereas spraying.

Unsafe spraying of water at the engine using a high pressure hose.
Don’t be this man.

On that observe, when you’ve got a backyard hose mendacity round, use that as a substitute — the strain from a type of is often adequate and gained’t injury vital parts.

What Kind of Engines Are Susceptible to Water Harm?

Automakers do all they will to maintain their engine bays weatherproof. However, there’s solely a lot they will do. Whereas most trendy vehicles get away with this, there are two forms of vehicles that try to be additional cautious with:

  • Outdated vehicles, and
  • Modified vehicles

Outdated vehicles are a simple goal for water injury as a result of despite the fact that they as soon as had weatherproof engine bays, they might not anymore. Years of excessive temperatures and publicity to oils can take their toll on no matter little water safety these vehicles got here with.

Plastics and rubber are likely to get brittle and are susceptible to cracking in locations you’ll be able to’t see.

Modified vehicles, then again, have a special set of issues. Climate safety is determined by your particular setup. Most aftermarket half producers aren’t involved with making efficiency components as waterproof or sensible as OEM components — that’s a part of the enchantment.

So in case your automobile has an aftermarket air consumption, pressured induction, or a customized wiring harness, go straightforward on the water.

Exposed turbocharger in a modified BMW
It goes with out saying, in case your modified automobile has an uncovered turbocharger, spraying water in your engine bay is a recipe for catastrophe.

What Components of My Engine Bay Ought to I Cowl Earlier than Spraying Water?

The very best factor you are able to do is canopy your total engine when spraying water into the engine bay. Clear every part that’s across the engine following the steps that we’ll point out additional beneath.

To wash the engine itself, you’ll be able to spray a high-quality mist of degreaser adopted by brushing and wiping off with a microfibre fabric.

Earlier than spraying any water into your engine bay, it’s a good suggestion to cowl the:

  • alternator,
  • sensors,
  • distributor,
  • crankcase openings,
  • oil dipstick
  • fuse field, and
  • any uncovered electricals.
Protecting engine components when cleaning an engine bay

These components might be lined with a plastic drop fabric. Even thick rubbish baggage will do the trick. It’s not simply the electricals that you have to shield, you need to forestall any water from entering into the engine too.

Are There Any Mechanical Advantages to Cleansing an Engine Bay?

Whereas there are not any mechanical advantages to maintaining your engine bay clear, it’s price mentioning that maintaining your engine bay clear would possibly assist forestall mechanical issues. If you’re elbow-deep underneath the hood, it’s simpler to identify any leaks or points after they begin.

It’s true that grease and filth collected on prime of your engine can lure some warmth, however not to some extent the place it’ll make your automobile run hotter than regular.

There’s no proof {that a} cleaner engine will run higher than a grimy engine. Nevertheless, a cleaner automobile will function higher versus a grimy automobile.

Eradicating particles, twigs, and leaves gained’t damage. For instance, if you happen to let sufficient gunk pile up on the backside of your windshield, your heating, air flow, and air con system would possibly undergo.

Engine Bay Cleansing — The Course of

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Beneath you’ll discover step-by-step directions on tips on how to clear your engine bay. Earlier than you start, check out a number of the cleansing provides you’ll must get began:

  • Microfibre cleansing cloths
  • Plastic drop fabric
  • Auto detailing brushes
  • Underhood work gentle
  • Degreaser
  • Toothbrush
  • Backyard hose

When you’re actually going all out, you may additionally need to use a wire brush attachment in an influence drill too.

Right here’s the way it’s executed.


Begin by ensuring that your engine is on the proper temperature. Engaged on a chilly engine is really useful by most degreaser producers, however there are benefits to engaged on a heat engine too.

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In case your engine is heat, it’ll assist to emulsify the oil and grease, making it simpler to take away. Know the distinction between heat and sizzling — if it’s sizzling to the contact and you must suppose twice earlier than inserting your hand on it, wait until it will get slightly cooler.

When you stay in a chilly setting, keep away from spraying chilly water on a sizzling engine because the metallic might contract and crack.

The subsequent step is to disconnect your battery. You possibly can both disconnect solely the destructive terminal, or you’ll be able to take away the battery fully. The latter is what we suggest because it frees up extra space so that you can work round.

You then need to take a observe of the place your alternator, distributor, and spark plugs are positioned. Ensure all connections are good and tight. Do not forget that these components of your engine bay will likely be lined with plastic proper earlier than the moist clear step.

Just be sure you take your time to do the prep work correctly as it’ll prevent complications later within the course of. When you’ve got a detachable hood liner, we suggest eradicating it as a result of you’ll be able to wash it individually.

Dry Clear and Wipe

Dry wiping engine

Dry cleansing your engine will make it simpler so that you can obtain the consequence you’re after, with out having to spray quite a lot of water into the engine bay.

When you drive a contemporary automobile with distinctive climate safety underneath the hood, you could skip this step solely except you park in an space with bushes or that’s notably windy.

Begin off by eradicating as a lot of the mud as doable utilizing solely a set of artificial brushes, a vacuum cleaner, and a microfibre fabric. It’s a good suggestion to wash off this filth earlier than the water pushes it into locations which are onerous to succeed in.

The concept is to finally use as little water within the moist cleansing course of as doable.

Moist Wash

That is the step that will get everyone nervous. Begin by protecting the highest of your engine with a plastic sheet. Proceed to softly spray water with a backyard hose throughout the engine.

You possibly can clear the engine individually utilizing a degreaser, brushes, and a microfibre fabric, with out spraying any water straight on it. As we talked about earlier than, this step will depend upon what kind of automobile you drive.



The subsequent step is to spray the affected space of the engine bay with a degreaser of your selection. Be sure you not spray any of the belts. Let it sit for 3 to five minutes in order that filth and dirt can loosen up. If the filth built-up is extreme, you should utilize a brush or a rag to agitate it.

When you discover that you simply’re coping with oil leaks, you would possibly need to repeat this step utilizing a full-strength degreaser after rinsing off.


When you’ve let the degreaser sit for some time, scrub down probably the most affected components of your engine bay with an appropriate brush or wash mitt. It will make it simpler so that you can do away with the filth with out utilizing an excessive amount of water.


Areas such because the valve cowl may need years of filth and oil constructed up. So scrubbing that space is important. Ensure to make use of a brush that has artificial bristles, not the metallic type.


After you’ve utilized degreaser and scrubbed off the filth, it’s time to rinse away the entire particles. When you’re utilizing an influence washer, be sure to maintain it on the low setting. A daily hose is best suited to the job.

Rinsing engine degreaser with a water hose

Air Dry

To dry the engine bay up, you’ll be able to both use an air blower or just wipe it down completely. When you see puddled-up water wherever within the engine, use a vacuum to do away with it.

Ending Touches

As soon as the engine bay is dry, you’ll be able to reinstall the battery. To essentially make issues pop, you’ll be able to end off with sprucing the painted surfaces and painted surfaces with a water-based trim restorer.

Using trim restorer on engine bay

This non-greasy answer will rejuvenate the deep black shade of the rubber and plastic parts in your engine bay.

Like New From the Manufacturing Line

We’ve listed one of the best engine bay cleaners and those that we expect would be the most useful to you, however there are a lot extra on the market.

Which degreaser do you want to make use of for cleansing underneath the hood? Did we miss one which ought to be on this checklist? Tell us within the feedback beneath!

Have you been searching for the Best engine degreaser for pressure washer ranked by customer satisfaction.


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