10 Best Engine Degreasers 2025 in the United States

The Chemical Guys Signature Series Orange Degreaser is a heavy-duty, all-purpose cleaner designed to tackle tough grease, oil, and grime on engines, tires, and undercarriages. Its concentrated formula allows adjustment of strength depending on the cleaning job, ranging from light to heavy-duty, adding versatility. It works quickly to break down stubborn contaminants, making it efficient for both automotive and industrial use.

The spray, scrub, and rinse application method is straightforward and suitable for users who prefer an easy cleaning process. It is safe for exterior parts like undercarriages and wheel wells. While the product brief does not specify biodegradability, users concerned with environmental impact may want to investigate further. Trusted by professionals and enthusiasts alike, the degreaser is known for reliability and strong cleaning power.

Since it is a chemical degreaser with professional strength, careful use is recommended to avoid potential damage to sensitive surfaces or skin, even though it is designed for safe exterior use. This degreaser is well-suited for anyone needing a powerful cleaner for automotive or industrial grime, especially those seeking a flexible product capable of handling various levels of dirt and grease.

The Simple Green 73434010 Industrial Cleaner & Degreaser is a versatile, concentrated liquid cleaner designed for a wide range of surfaces, including industrial machinery, which can relate to engine parts. Its all-purpose formula is non-toxic, nonabrasive, and solvent-free, making it safe to use on many washable materials without harsh chemicals. It comes with a pleasant lemon scent and is biodegradable, which is a plus for environmentally conscious users.

This product is liquid and concentrated, allowing dilution to match the cleaning strength needed, which is helpful for varying degrees of grime or grease. Since it is marketed as an all-purpose cleaner rather than a heavy-duty engine degreaser, its cleaning strength might not be as strong as specialty degreasers specifically made for tough engine grease and oil. It is compatible with a variety of surfaces, but users should always test on sensitive parts before use.

The application method depends on dilution and manual scrubbing, as no spray or foam functionality is mentioned. This cleaner is a suitable choice for those seeking a safer, environmentally friendly degreaser for light to moderate engine cleaning and other household or industrial uses. However, for heavy, stubborn engine grease, a more specialized product might be necessary.

The 3D Orange Degreaser is a versatile and organic citrus-based cleaner designed for multiple surfaces, including plastic, metal, vinyl, leather, and carpet. It's especially useful for both interior and exterior uses, making it a handy product for car maintenance. One of its significant strengths is its cleaning power without leaving any residue or stains, which is crucial for maintaining the appearance of your surfaces.

Its biodegradability and safety for various materials highlight its user and environmentally friendly aspects. The citrus scent is a pleasant bonus, especially for those who prefer natural fragrances over chemical odors. However, as a general-purpose cleaner, it might not replace heavy-duty commercial degreasers for more stubborn grime and grease.

This product is well-suited for individuals looking for a safe, organic, and multifunctional degreaser for regular maintenance, especially within the automotive sector.