10 Best engine cleaners of 2025

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Best Choice

1

Gunk

GUNK Original Heavy Duty Engine Cleaner & Degreaser (EB1) - 17 oz. (Case of 12) - Super Clean Automotive Spray for Car Engines - Engine Degreaser - Super Clean Degreaser
9.7

Exceptional

Our Rating

9.9
worth the money

9.9
Simple to use
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Value for Money

2

P21S
P21S 13001B Auto Wash W/Sprayer, 1000 ml, White
Main highlights

Key Features
Powerful multi-tasking cleaner, effortlessly tackles tough stains, and leaves a refreshing orange scent. Ideal for deep cleaning needs.

Ideal Use Cases
Perfect for kitchen messes, bathroom grime, and stubborn stains on hard surfaces. Enhances cleanliness and ambiance with its fresh scent.

Customer Reviews
Highly praised for its effectiveness on tough stains and the pleasant, lingering orange aroma that refreshes the cleaned spaces.
9.6

Exceptional

Our Rating

9.7
Aroma

9.5
Simple to use

9.1
worth the money
3

Chemical Guys
Chemical Guys Signature Series Orange Degreaser, Heavy-duty All-purpose Cleaner For Engines, Tires, Undercarriages & More, Professional Strength Formula, Breaks Down Grease, Oil & Grime - 128 fl oz
Main highlights

Professional Strength Formula
Signature Series Orange Degreaser offers professional-grade cleaning with citrus extracts and hyper surfactants for tackling tough dirt, grime, and grease.

Versatile Cleaning Applications
Ideal for cars, trucks, SUVs, motorcycles, RVs, and household uses like ovens and grills.

Highly Praised Performance
Customers love its effectiveness on engines and household surfaces, with easy application and impressive results.
9.5

Excellent

Our Rating

9.9
deep clean

9.3
Simple to use

9.3
Simple to take off
4

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

Powerful Degreasing Performance
Removes oil, dirt, grime, and grease effectively from machinery and engines.

Versatile Application Areas
Ideal for auto engines, industrial machinery, and farm equipment cleaning.

Highly Praised Effectiveness
Customers appreciate its ability to clean with minimal effort.
9.4

Excellent

Our Rating
5

Griot's Garage
Griot's Garage 11158 Engine Cleaner Gallon 128 Fl Oz (Pack of 1)

29% Off
Main highlights

Loosens and Breaks Up Grease
The Griots Garage 11158 Engine Cleaner effectively loosens and breaks up grease, grime, and engine gunk, ensuring a thorough clean.

Ideal for Engine Cleaning
Perfect for cleaning engine parts and readying your powerplant for dressing, ideal for vehicles subjected to dirt and dust.

Ease of Use
Customers commonly praise its ease of use, highlighting the simple spray-on, agitate, and wipe clean application process.
9.3

Excellent

Our Rating

9.7
Aroma

9.5
Simple to use

9.3
worth the money
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6

SONAX
SONAX Engine Cleaner - Engine Degreaser - Easy Engine Cleaner - Engine Cleaner Spray - Engine Bay Cleaner 543200 16.9 fl oz
Main highlights

Powerful Formula
Perfect for removing the toughest oil, grease, and dirt from engines.

Ideal Use for Engine Cleaning
Best for deep cleaning car engines and machine parts.

Customer Praised Performance
Highly effective on plastic components with minimal scrubbing.
9.2

Excellent

Our Rating

9.3
Simple to use

8.4
worth the money
7

PURPLE POWER
Purple Power (4320P) Industrial Strength Cleaner and Degreaser - 1 Gallon, 128 Fl Oz (Pack of 1)
Main highlights

Powerful Cleaning Formula
Concentrated formula penetrates grease, oil, and dirt instantly.

Versatile Application
Ideal for auto, home, marine, farm, and shop use.

Customer Favorite Feature
Praised for its effectiveness as a household cleaner.
9.1

Excellent

Our Rating

9.3
Simple to use

8.7
worth the money

8.4
deep clean
8

Liqui Moly
Liqui Moly Pro-Line Engine Flush | 500 ml | Oil additive | SKU: 2037
Main highlights

Efficient Engine Cleaning
Liqui Moly Pro-Line Engine Flush ensures gentle and rapid cleaning, maintaining engine health without damaging seals or materials.

Ideal for High-Mileage Vehicles
Perfect for gasoline and diesel engines, especially older models prone to oil sludge and carbon buildup.

Notable Customer Praise for Performance
Customers frequently commend the product for improving engine smoothness and reducing oil consumption.
8.9

Very Good

Our Rating

9.7
Simple to use

9.3
worth the money

9.1
Sheerness
9

selsil

selsil Professional Engine Cleaner and Degreaser Spray, 16.90 fl oz, Non-foaming Engine Cleaner Spray, Removes Oil & Grease, For All Types of Engines Automotive, Industrial & More, 1 Pack
8.7

Very Good

Our Rating
10

GROVE

Gunk Engine Cleaner Spray 17 oz Bundle with Microfiber Cloth - Powerful Engine Degreaser for Cars, Trucks, RVs, and Farm Equipment - Removes Dirt, Grime, and Road Dust - (3 Items)
8.5

Good

Our Rating

10 Best engine cleaners of 2025

1

GUNK Original Heavy Duty Engine Cleaner & Degreaser (EB1) - 17 oz. (Case of 12) - Super Clean Automotive Spray for Car Engines - Engine Degreaser - Super Clean Degreaser

9.9

9.9

How do we rank?

How do we rank?

Analyzing top stores

2

P21S 13001B Auto Wash W/Sprayer, 1000 ml, White

9.7

9.5

9.1

3

Chemical Guys Signature Series Orange Degreaser, Heavy-duty All-purpose Cleaner For Engines, Tires, Undercarriages & More, Professional Strength Formula, Breaks Down Grease, Oil & Grime - 128 fl oz

9.9

9.3

9.3

4

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

5

Griot's Garage 11158 Engine Cleaner Gallon 128 Fl Oz (Pack of 1)

9.7

9.5

9.3

6

SONAX Engine Cleaner - Engine Degreaser - Easy Engine Cleaner - Engine Cleaner Spray - Engine Bay Cleaner 543200 16.9 fl oz

9.3

8.4

7

Purple Power (4320P) Industrial Strength Cleaner and Degreaser - 1 Gallon, 128 Fl Oz (Pack of 1)

9.3

8.7

8.4

8

Liqui Moly Pro-Line Engine Flush | 500 ml | Oil additive | SKU: 2037

9.7

9.3

9.1

9

selsil Professional Engine Cleaner and Degreaser Spray, 16.90 fl oz, Non-foaming Engine Cleaner Spray, Removes Oil & Grease, For All Types of Engines Automotive, Industrial & More, 1 Pack

10

Gunk Engine Cleaner Spray 17 oz Bundle with Microfiber Cloth - Powerful Engine Degreaser for Cars, Trucks, RVs, and Farm Equipment - Removes Dirt, Grime, and Road Dust - (3 Items)

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