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10 Best Engine Degreasers and Cleaners of July 2024


SaleBestseller No. 1 −18%
WD-40 Specialist Machine & Engine Degreaser Foaming Spray, 18 OZ
Bestseller No. 2
Chemical Guys CLD_201_16 Signature Series Orange Degreaser, Multipurpose Power, Safe for Cars, Trucks, SUVs, Motorcycles, RVs & More, 16 fl oz
Bestseller No. 3
SQ Engine Cleaner and Degreaser, 12 Pack, 14.5 Oz per can
Bestseller No. 4
3D Grand Blast Heavy Duty Degreaser - All Purpose Cleaner Safe & Effective for Cars, Engines, Floors, Home Use - Rapidly Cleans Grease & Grime Build Up 1 Gallon
SaleBestseller No. 5 −45%
Gunk EBT32 Engine Cleaner and Degreaser - 32 oz.
Bestseller No. 6
Gunk EB1-12PK 'Original Engine Brite' Engine Degreaser - 15 oz., (Case of 12)
Bestseller No. 8
ABRO Heavy Duty Power Degreaser, High Performance Multifunctional Auto Engine Degreaser for Quick and Easy Removal of Grease, Oil, Dirt &Grime, Engine Cleaner and Degreaser & Car Metal Cleaner, 32 oz


Maintaining a clean engine is not only crucial for aesthetic reasons but also for the optimal performance and longevity of your vehicle. Engine degreasers and cleaners are specially formulated to cut through grease, oil, dirt, and grime that build up over time in your engine bay. Using the right product can prevent overheating, corrosion, and ensure that your engine runs more efficiently. However, choosing the right engine degreaser and cleaner depends on several factors including the formulation, compatibility with engine components, and your specific cleaning needs. This guide will help you navigate these choices to find the best engine degreaser and cleaner for your vehicle.

Key Features to Consider

Type of Cleaner

  • Water-Based vs. Solvent-Based: Water-based cleaners are generally safer for the environment and less harsh on engine components but may be less effective on very greasy or oily surfaces. Solvent-based cleaners are more powerful and can tackle tougher grime but can be more abrasive and potentially harmful to sensitive components.

Effectiveness and Strength

  • Cleaning Power: Assess how effectively the product removes heavy grease and oil. Look for products that can break down tough grime without multiple applications.
  • Speed of Action: Consider how quickly the degreaser works. Some products act almost immediately, while others may require a soaking period.

Safety and Environmental Impact

  • Non-Toxic Ingredients: Opt for degreasers with non-toxic, biodegradable ingredients if safety and environmental impact are concerns. These are safer for home use and better for the planet.
  • Compatibility: Ensure the degreaser is safe to use on all engine parts, including plastics, rubbers, and metals. Some strong chemicals can damage or degrade these materials over time.

Application and Use

  • Ease of Application: Check if the product comes in a convenient spray bottle or requires mixing and application with tools. Spray bottles are generally easier and more direct.
  • Residue-Free: A good engine cleaner should evaporate or rinse off without leaving residues that could attract more dirt or interfere with engine operation.

Pros and Cons

Pros of Engine Degreasers and CleanersCons of Engine Degreasers and Cleaners
✔️ Effectively removes oil, grease, and grime from engine components❌ Solvent-based cleaners can be harsh on rubber and plastic parts
✔️ Helps prevent corrosion and improves engine efficiency❌ Some powerful degreasers may be toxic and harmful to the environment
✔️ Can help identify leaks and problems by providing a cleaner work area❌ Incorrect use can lead to component damage or personal injury
✔️ Available in various formulas to suit different needs and preferences❌ May require careful handling and proper disposal due to chemical content

Quick Tips

  1. Read Reviews: Look for user reviews and testimonials to gauge the effectiveness and safety of different brands and types.
  2. Test Before Full Application: Always test the degreaser on a small, inconspicuous area of the engine to ensure it does not damage the finish or parts.
  3. Consider the Cleaning Frequency: If you clean your engine often, you might prefer a milder, environmentally friendly cleaner. For less frequent, deep cleans, a stronger solvent-based cleaner might be more effective.

Selecting the right engine degreaser and cleaner involves considering the product’s cleaning power, chemical formulation, and ease of use. By carefully evaluating these factors along with safety and environmental impacts, you can choose a product that effectively cleans your engine while protecting its components and the environment. A well-chosen engine cleaner not only helps maintain your vehicle’s performance but also contributes to its longevity and reliability.