AMSOIL Cleaners and Protectants

AMSOIL Engine Degreaser

Engine Degreaser (AED) is a professional-strength formula packed with powerful degreasing solvents that quickly and easily remove the toughest grease, dirt, and grime from engine surfaces. Just spray it on and wash off with water.

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Product data sheets

View, download, or save a copy of the Product Data Sheet or Safety Data Sheet for AMSOIL Engine Degreaser.

Available sizes

Product code Package size Unit of measure
AEDSC-EA 15 oz. Spray Can Each
AEDSC-CA Case of 12 15 oz. Spray Cans Case of 12

AMSOIL Engine Degreaser

AMSOIL Engine Degreaser (AED) is a professional-strength aerosol cleaner formulated with powerful degreasing solvents that lift the toughest grease, dirt, and grime off engine surfaces and rinse clean with water. Packaged in a 15-ounce spray can with a powerful stream, this product is built for technicians, detailers, weekend mechanics, and equipment owners who need a fast, residue-free engine cleanup before service, inspection, or detail work.

Professional-strength formula for the toughest engine grime

Years of caked oil, road film, transmission seepage, and baked-on grease can hide leaks, accelerate corrosion, and make routine service harder than it needs to be. AMSOIL Engine Degreaser solves that with a blend of powerful degreasing solvents that emulsify heavy grease and lift dirt off metal, casting, and plated surfaces. One pass usually clears most underhood buildup, and stubborn deposits can be brushed before rinsing.

Common applications include passenger-car engine bays, light-truck and diesel powertrains, motorcycle engines, ATV and UTV chassis, lawn-mower decks and small-engine housings, marine deck rigging, and any greasy drivetrain part that benefits from a thorough cleanup before reassembly or inspection.

Powerful directional stream reaches into tight spaces

The aerosol delivers a powerful stream rather than a soft foam, which makes it useful for blasting grease out of valley covers, around exhaust manifolds, between cylinder fins on air-cooled engines, behind alternators, and into the recessed corners of an engine bay where a wash mitt cannot reach.

Application is straightforward: apply generously to a dry engine, allow the chemistry to soak for 15 minutes, then brush heavy deposit areas with a parts brush before the final rinse. The directional stream gives precise control, so coverage can be focused on the dirty zones without saturating sensitive electronics.

Leaves no residue after rinsing

A clean rinse profile matters on engine paint, anodized covers, and plated fasteners that will be visible after the job. AMSOIL Engine Degreaser is formulated to rinse off cleanly with water, leaving no film, grit, or sticky surfactant trail behind. The surface is ready for follow-up detailing, dressings, or inspection once the engine has been started and idled dry.

Safe on all engine components

Engine bays mix metal, casting, rubber, plastic, painted surfaces, and electronics within inches of one another. AMSOIL Engine Degreaser is designed to be safe on all engine components when used as directed: applied to a cool engine, kept off uncovered electronics, and rinsed with regular water pressure rather than a high-pressure jet.

Painted exterior surfaces such as fenders, hoods, and trim are a different consideration. Any overspray that lands on exterior painted surfaces should be wiped off immediately, and AMSOIL Engine Degreaser should not be used on asphalt or other surfaces that are affected by organic solvents.

Recommended applications and use

AMSOIL Engine Degreaser is recommended for engine bays and greasy mechanical components on the following equipment, used per the directions printed on the can: cool engine, sensitive items covered, full soak time observed, and a controlled water rinse rather than a high-pressure jet.

Before any application, the engine must be off and cool, with the distributor, air filter, air intake system, carburetor or throttle body, electronic controls, and electrical components covered. Contact with under-hood wiring and electronic sensors should be limited. After cleaning, coverings can be removed, the engine started, and idled to ensure complete drying. The procedure can be repeated as needed on heavily soiled areas. Highly pressurized water should not be used to rinse the engine, and the product is not intended for use on asphalt or other organic-solvent-sensitive surfaces.

Order AMSOIL Engine Degreaser

AMSOIL Engine Degreaser is available in 15-ounce aerosol spray cans, product code AEDSC, sold as a single can (AEDSC-EA) or as a case of twelve cans (AEDSC-CA). The product is backed by the AMSOIL Limited Liability Warranty. Aerosol containers may have different disposal requirements than other waste in some jurisdictions, so disposal should follow all federal, state, provincial, and local regulations. For product-match questions across cars, trucks, motorcycles, ATVs, UTVs, marine, and lawn equipment, see the vehicle lookup guide, and to browse related cleaners and maintenance products, see the product catalog. To order, use Buy Now.

Customer reviews

  • Brake clean

    Works better as break clean then anything

    By Trenton on March 19, 2026.

  • Paul’s truck

    It easily to use didn’t remove the paint.

    By Paul M on October 08, 2025.

    Would recommend this to a friend.

  • Motor

    Best degreaser I've used for the price

    By Jacob on May 17, 2025.

    Would recommend this to a friend.

Read all 12 reviews

Frequently asked questions

How is AMSOIL Engine Degreaser used on an engine bay?

The engine must be off and cool. Items sensitive to water should be covered, including the distributor, air filter, air intake system, carburetor, electronic controls, and electrical components, and contact with under-hood wiring and sensors should be limited. The can is then shaken well and applied generously to a dry engine. After a 15-minute soak, heavy deposit areas can be brushed, then the engine is rinsed with water from the top down, avoiding highly pressurized water. Coverings are removed, any removed parts are replaced, and the engine is idled to ensure complete drying. The procedure can be repeated as needed on stubborn areas.

Is AMSOIL Engine Degreaser safe on aluminum, plastic, and rubber engine components?

The formula is designed to be safe on all engine components when used as directed. Painted exterior surfaces such as fenders and trim are a separate case: any overspray should be wiped from exterior painted surfaces immediately, and the product should not be used on asphalt or other surfaces that are affected by organic solvents.

What is the difference between an engine degreaser and brake cleaner?

Brake cleaners are quick-evaporating solvents designed to clean brake hardware and metal parts dry without a water rinse. AMSOIL Engine Degreaser is a water-rinse degreaser built to lift heavy grease, dirt, and grime off larger surfaces such as engine bays and powertrain housings, with an active 15-minute soak step and a water rinse from the top down to flush the dissolved soil away.

Can AMSOIL Engine Degreaser be used on a motorcycle, ATV, or lawn mower engine?

Yes. The same procedure applies: a cool engine, sensitive electronics covered, full soak time observed, and a controlled water rinse from the top down. Air-cooled engines on motorcycles, ATVs, and lawn equipment benefit from the directional stream because it reaches between cooling fins and into recessed casting areas that hand wipes miss.

Will rinsing the engine bay damage electrical connectors or sensors?

Risk is limited when the directions are followed: cool engine, sensitive items covered, contact with under-hood wiring and electronic sensors minimized, and normal water pressure used instead of a high-pressure jet. After rinsing, coverings can be removed and the engine idled to ensure complete drying before being driven.

Does AMSOIL Engine Degreaser leave residue on engine paint or anodized surfaces?

The formula is designed to leave no residue after a proper water rinse. For a clean finish on visible engine paint and trim, the engine should be rinsed thoroughly from the top down so dissolved soil and degreaser are flushed away rather than left to dry on the surface.

How is AMSOIL Engine Degreaser packaged and warrantied?

The product is sold in 15-ounce aerosol spray cans under product code AEDSC, in single-can (AEDSC-EA) and case-of-twelve (AEDSC-CA) configurations. The AMSOIL Limited Liability Warranty applies. Aerosol containers may be subject to specific disposal requirements depending on the jurisdiction, so empty cans should be disposed of in accordance with federal, state, provincial, and local regulations.