Best Engine Degreasers of 2026

Name: STP Engine Degreaser for Heavy Dirt Removal
Brand: STP

Joseph Prokop

Last Updated: 11 Feb 2025

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Engine degreasers are powerful cleaning agents specifically designed to remove grease, grime, and oil from engine components. These products come in various forms such as sprays, foams, and gels, and are formulated to effectively dissolve tough stains and build-ups on engine parts. Engine degreasers are an essential tool for maintaining the performance and longevity of vehicles, machinery, and equipment. They are suitable for use on engines, transmissions, and other metal surfaces, and can help to improve the appearance and functioning of these components.

At a Glance: Our Top Picks

#TOP 1

STP Engine Degreaser for Heavy Dirt Removal

9.8

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#TOP 2

Turtle Wax Max Power Engine Degreaser 5L Cleaner

9.7

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#TOP 3

Gunk 733 Engine Degreaser 1 Litre

9.5

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Top 10 Engine Degreasers

#TOP 1

STP Engine Degreaser for Heavy Dirt Removal

STP
GST73500ENP
500 ml (Pack of 1)

STP Engine Degreaser Professional Series 500ml, Penetrates and Dissolves Heavy Dirt and Deposits, Easily and Quickly Restore your Engine's Performance for a Smoother Engine

The STP Engine Degreaser is designed to penetrate and dissolve heavy dirt and deposits, making it ideal for restoring your engine's performance. You will find it quick and easy to use, allowing you to clean your car, truck, van, or tractor engine without hassle. Just apply it carefully to avoid contact with external surfaces, and flush with water if necessary. This effective degreaser helps ensure your engine runs smoothly, enhancing your overall driving experience.

9.8

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What We Like

Effective dirt and deposit removal
Quick and easy application
Suitable for various engines
Enhances engine performance

#TOP 2

Turtle Wax Max Power Engine Degreaser 5L Cleaner

Turtle Wax
53671
5 l (Pack of 1)

Turtle Wax Max Power Engine Degreaser 5L - Heavy-Duty Automotive Cleaner for Oil, Grime & Grease Removal - Safe for Paintwork, Plastic, Rubber - High Foaming Action for Valeters & Detailers

The Turtle Wax Engine Degreaser is a powerful cleaning solution designed to tackle tough oil, grime, and grease. It quickly restores your engine compartment to a pristine state, making it easier for you to maintain your vehicle. Its surface-safe formula ensures that paintwork, plastics, and rubber trims remain undamaged during the cleaning process. With high foaming action, this degreaser lifts contaminants effortlessly, reducing the need for excessive scrubbing and saving you time and effort. Plus, it comes ready to use, providing convenience for busy valeters and detailers.

9.7

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What We Like

Powerful and effective cleaning
Safe for various surfaces
High foaming action
Ready-to-use formula
Minimises spills and leaks

#TOP 3

Gunk 733 Engine Degreaser 1 Litre

Gunk
GK6733
1 l (Pack of 1)

Gunk 733 Engine Degreaser Brush On 1L

The Gunk 733 Degreaser is a versatile de-greasing fluid designed for the automotive trade. With a generous size of 1 litre, it is perfect for tackling tough grease and grime on car parts. Weighing just over 2 pounds, it is convenient to handle, allowing you to clean efficiently without strain. The product's dimensions make it easy to store, ensuring it fits well in your garage or workshop. Using this degreaser will help you maintain your vehicle in top condition with minimal effort.

9.5

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What We Like

Versatile automotive cleaner
Large 1 litre size
Easy to handle
Compact packaging

#TOP 4

Autoglym Engine & Machine Cleaner, 1L - Effective Cleaning Solution

Autoglym
EC001
White
1 l (Pack of 1)

Autoglym Engine & Machine Cleaner, 1L - Machine and Engine Cleaner That Rapidly Cleans Car Engines, Components, Tools and Machinery, White

The Autoglym Engine Cleaner is an exceptional product designed to make your engine maintenance effortless. Its water-based formula effectively dissolves oil, grease, and grime, ensuring your engine remains in top condition. This cleaner serves as both a detergent and a degreaser, providing a comprehensive solution for your cleaning needs. Being solvent-free and biodegradable, it is an environmentally friendly choice. Plus, its easy-to-use spray-on, brush, and hose-off method means you can achieve a shiny clean engine without hassle.

9.4

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What We Like

Rapidly dissolves oil and grease
Environmentally friendly formula
Easy spray-on application
Works on various materials

#TOP 5

WD-40 Specialist 500ml Degreaser for All Surfaces

WD-40 Specialist
44393
500 ml (Pack of 1)

WD-40 Specialist Degreaser 500ml: Professional Strength Cleaner & Degreaser. Dissolves Stubborn Grease, Restores Surfaces to Pristine State

WD-40 Specialist Degreaser is a powerful cleaner designed to tackle tough grease and dirt effortlessly. You will find it suitable for a variety of surfaces, including metal, making it perfect for diverse cleaning tasks. Its formulation includes corrosion inhibitors, ensuring that surfaces are protected from damage during cleaning. Whether you are handling domestic chores or heavy-duty industrial applications, this fast-acting degreaser works immediately on contact, providing you with efficient cleaning power.

9.2

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What We Like

Powerful cleaning capability
Safe for electrical equipment
Corrosion protection included
Works on various surfaces
Easy to rinse and residue-free

#TOP 6

Showtime Chemicals Engine Degreaser Concentrate 6 Litres

Showtime Chemicals
Showtime Chemicals
6 Litres

Showtime Chemicals Concentrate Engine Degreaser | Parts Washer Fluid | Dilute up to 20:1 | Removes Dirt & Grime with Ease | Multiple Uses (6 Litres)

The Showtime Chemicals Degreaser is a powerful cleaner designed for various applications, ensuring ultimate cleaning performance. It effectively lifts away stubborn dirt, grime, and grease, making your cleaning tasks easier and more efficient. You will appreciate how it works immediately on contact—just wipe it off and enjoy a residue-free surface. Additionally, the excellent soil removal capabilities mean you can trust this product to leave your engines and machinery looking as good as new.

9.2

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What We Like

Powerful cleaning performance
Multiple uses across various machines
Removes stubborn dirt and grime
Works instantly on contact
Leaves no residue behind

#TOP 7

Gunk 6868 5L Ultra Engine Degreaser for Car Parts

Gunk
GK6868
5 l (Pack of 1)

Gunk 6868 5L Ultra Engine Degreaser,Label may vary

The Gunk 6868 Engine Degreaser is designed to tackle tough grease and grime on your car parts. This powerful degreaser ensures that you can keep your engine clean, which can enhance performance and prolong the life of your vehicle. Its 5-litre capacity means you have plenty of product to handle multiple cleaning tasks. Additionally, the product comes with a label that may vary, making it visually distinctive while maintaining the same effective formula you trust.

9.2

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What We Like

Effective on tough grease
5-litre capacity
Suitable for car parts
Reliable brand

#TOP 8

Holts Professional Engine Cleaner Spray 500ml

Holts
LOYHMTN0701A
500ml

Holts Engine Degreaser Spray, Engine Cleaner Degreaser, Professional Quality Engine & Parts Degreaser, Removes Dirt, Grease & Oil, Car Degreaser To Clean Any Surface, 360° Spray, 500ml

Holts Engine Degreaser Spray is a professional-quality solution designed to tackle oil, grease, and dirt that accumulates in your car's engine. This powerful cleaner ensures that all parts remain clean and undamaged, enhancing your vehicle's performance. Its multi-purpose formula allows you to safely clean various surfaces, from tools to painted floors, providing versatility in your cleaning routine. With the convenient 360° spray bottle, you can easily access those hard-to-reach spots, making your cleaning tasks much simpler.

9.0

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What We Like

Professional engine cleaning solution
Powerful degreasing action
Multi-surface cleaning capability
360° spray for easy access

#TOP 9

Vstarner Ultra Engine Degreaser Spray Cleaner

Vstarner
ADED6L
6 l (Pack of 1)

Ultra Engine Degreaser Spray Cleaner Car Grease Dirt Remover 6 Litre

The Vstarner Engine Degreaser is an effective solution for removing tough grease and dirt from your engine. This powerful degreaser helps restore your engine's appearance, enhancing overall performance. It's easy to use, allowing you to tackle grime without hassle. With a generous 6-litre capacity, you'll have plenty of product to keep your engine clean and well-maintained. This degreaser is perfect for car enthusiasts who value a clean engine and want to prolong the life of their vehicle.

9.0

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What We Like

Effective grease removal
Easy to use
Generous 6-litre capacity
Enhances engine performance

#TOP 10

CARSHARK Heavy Duty Engine Degreaser 5 Litre

CARSHARK
5 l (Pack of 1)

CARSHARK Engine Degreaser 5 litre Concentrate, Heavy Duty Formula, Use on All Engines

The CARSHARK Engine Degreaser is a heavy-duty concentrated formula designed for all engines. Its powerful degreasing action effectively removes grease and grime, making your engine cleaner and more efficient. You will appreciate how easy it is to use, transforming your engine maintenance routine. This product not only helps in improving performance but also extends the life of your engine, ensuring it runs smoothly for longer. With its versatility, you can confidently tackle any engine cleaning task.

8.8

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What We Like

Heavy-duty concentrated formula
Suitable for all engines
Powerful degreasing action
Improves engine performance
Easy to use

Frequently Asked Questions (FAQs)

1. What is the meaning of degreasers?

A degreaser is a solvent-based or solvent-containing cleaning agent. It is a chemical product mostly used for the removal of water-insoluble substances such as grease, paint, oil, lubricants, corrosive products, abrasive dust and all other organic films. This cleaning agent is especially made for the removal of grease.

2. What are examples of degreasers?

Many of the most effective degreasers are also the safest for the environment. These include vinegar, lemon juice, cornstarch, borax, baking soda, and castile soap. Several makers of dishwashing liquids also add natural grease-cutters, such as lemon and other citrus oils, to their formulas.

3. Are engine degreasers safe?

There are many methods to cleaning your engine, but an engine degreaser is by far the safest, easiest, and gentlest one. Spraying your engine with a high-powered air hose or steam cleaning it can lead to damage and break sensitive parts. Degreasing an engine using this method is also easier.

Editor's Notes

During our engine degreaser research, we found 129 engine degreaser products and shortlisted 10 quality products. We collected and analyzed 55,047 customer reviews through our big data system to write the engine degreasers list. We found that most customers choose engine degreasers with an average price of £16.66.

The engine degreasers are available for purchase. We have researched hundreds of brands and picked the top brands of engine degreasers, including STP, Turtle Wax, Gunk, Autoglym, WD-40 Specialist.

Written by

Joseph Prokop

Joseph is a seasoned writer who's also passionate about automotive. His passion for automotive care and maintenance fuels his drive for more knowledge in the field. He currently resides in Middlesbrough, where he finds time to write informative contents on automotive. His automotive related articles are quite popular in journals around the world. Joseph continues to use his wealth of experience in the industry to create helpful guides on automotive.