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O’Reilly Auto Parts Chemicals

O'Reilly Auto Parts offers a complete line of automotive fluids and aerosol products for your car care needs. Rigorous quality control testing ensures consistency throughout our product line – and dependability you can count on.

Shop by Chemical Type

O'Reilly DOT 3 Brake Fluid is designed for use in all vehicles with ABS disc and drum brakes. O’Reilly brake fluid exceeds DOT 3 and other Federal and SAE specifications for motor vehicle brake fluid.

  • Meets Federal Motor Vehicle Safety Standard Number 116, SAE-J-1703 and W-B-680a.
  • Heavy Duty high temp formula
  • Mixes with all other approved brake fluids and is suitable for use in ATE, Girling, Lockheed and other systems
  • Minimum Wet Boiling Point 284°F.
O’Reilly Diesel Exhaust Fluid (DEF) is made to meet the specific demands of diesel engines. Designed to support a cleaner environment, it emits less airborne fumes and works to ensure optimum performance of SCR engines.

  • Great for diesel exhaust fluid system engines
  • Easy to use
  • Eco-friendly and fuel efficient
  • Designed to meet the requirements of SCR engines
O'Reilly Power Steering Fluid is specially formulated to meet the service requirements for virtually all domestic and foreign manufacturers' power steering systems.

  • Designed to prevent leakage and squealing under severe conditions
  • Meets performance requirements of GM9985010 (part number: 1050017), Ford ESW-M2C128-C and D, Chrysler MS-5931 (Hydroboost Systems), AMC 4125 (part number: AM 899332) and Saginaw.
  • Effective against foaming, oxidation, corrosion and rusting
  • Delivers maximum wear and slippage protection
O'Reilly Power Steering Fluid is specially formulated to meet the service requirements for virtually all domestic and foreign manufacturers' power steering systems.

  • Outstanding resistance against sludge and deposit formation
  • Improved oxidation and thermal stability
  • Excellent frictional properties that provide smooth gear shifting
  • Improved anti-wear protection
  • Outstanding low temperature performance
O’Reilly all-season Windshield Washer Fluid formula protects washer equipment to -20°F and helps dissolve light ice and frost on windshields. Powerful cleaners dissolve dirt and road grime to give your windshield a clear, streak-free shine.

  • Safe for use in most vehicle
  • Intended for use in temperatures as low as -20°F
  • All-season formula
O’Reilly Gas Treatment uses powerful cleaning agents to help fight the accumulation of harmful carbon, gum and varnish deposits in your car’s fuel system.

  • Designed to remove water, which can lead to fuel line freeze
  • Helps keep fuel system clean
  • Reduces intake valve deposits
  • Improved fuel economy and horsepower
O’Reilly Octane Booster is specially formulated to economically increase fuel octane level. Regular use provides the following benefits:

  • Boosts horsepower by increasing number of fuel octane
  • Reduces annoying engine knock, ping and run-on
  • Smooths rough ride
O’Reilly Oil Treatment is formulated to minimize oil consumption by sealing valves, piston rings and cylinder walls. Reduces engine wear and extends life.

  • Designed to reduce excessive exhaust smoke
  • Blends readily with all petroleum base oils
  • Helps maintain peak engine performance
O’Reilly Brake Parts Cleaner removes oil, grease, brake fluid and contaminants quickly and with no residue. Designed for use on all ABS, disc and drum brakes.

  • Formulated to meet VOC requirements in CA
  • For use in areas that restrict the VOC content to 45%
O’Reilly Car Wash is high foaming shampoo formulated to polish and shine as it cleans.

  • Non-abrasive formula decreases drying time without spotting or streaking
  • Deep cleans
  • Shines & protects
  • Safe for all finishes
  • Biodegradable

O’Reilly Carburetor and Choke Cleaner is designed to maximize your carburetor performance by:

  • Quickly dissolves carburetor deposits such as gum, sludge and varnish
  • Improves fuel system performance
  • Enhances fuel economy
O’Reilly Fuel System Cleaner contains concentrated detergents that help dissolve and remove harmful carbon, gum and varnish deposits on fuel injectors.

  • Fights corrosion activity
  • Improves drivability
  • Restores lost power
  • Improves fuel economy
  • Helps reduce emissions
  • Removes harmful deposits from fuel injectors, intake valves and combustion chambers
O’Reilly Premium Engine Degreaser removes oil, dirt and grime build up from engines and other machinery.

  • Two active ingredients mix with both oil and water
  • When sprayed on and washed off, the water actually pulls oil and grease off the surface of the engine
  • VOC compliant in all 50 states
O'Reilly Fuel Injector and Carburetor Cleaner is specially formulated to clean performance reducing deposits such as dirt, gum, and varnish from fuel injectors and carburetors. Also aids in removing water from the gas tank and helps clean other key fuel system compartments including intake valves, ports, manifolds, and PCV valves.

  • Fights corrosion
  • Improves drivability
  • Restores lost power
  • Improves fuel economy
  • Helps reduce emissions
  • Works in Direct Injection Spark Ignited (DISI), Gasoline Direct Injection (GDI), Port Fuel Injection (PFI), and Carbureted.
O’Reilly Antifreeze/Coolant is a concentrated conventional green ethylene glycol based Antifreeze/Coolant containing inhibitors designed to provide protection from freezing, overheating, rust and corrosion. It protects all metals including aluminum and will not damage rubber parts.

  • Maximum freeze up protection to -34°F and boil over protection to +265°F (assumes 15 PSI pressure cap)
  • Provides year round protection
  • Protects against damaging rust and corrosion
  • Comparable with all Conventional Green Antifreeze
  • Available in full strength and pre-diluted 50/50 blends
O’Reilly DEX-COOL® Compatible Antifreeze & Coolant may be used in all General Motors vehicles that require DEX-COOL® Coolant. Contains a concentrated blend of premium long-lasting inhibitors to offer protection for up to 5 years or 150,000 miles.

  • Protects against temperature extremes and the ravages of rust, corrosion, and premature water pump failure
  • May be used in cars and light-duty trucks with aluminum radiators
  • Meets the silicate-free requirements of Japanese OEMs and meets the phosphate-free of European OEMs
  • Available in full strength and pre-diluted 50/50 blends
O’Reilly Universal Antifreeze & Coolant features a Long Life coolant technology that is compatible for use in all automobiles and light-duty trucks, regardless of make, model, year or original antifreeze color.

  • Inhibitors provide maximum cooling system protection against damaging rust and corrosion
  • Compatible for use in all automobiles and light-duty trucks
  • Amber color will not change the current antifreeze color when used for topping-off
  • Provides 150,000 miles or 5 years of maximum protection when a complete cooling system flush and fill is performed
  • Features a phosphate-free and silicate-free formula
  • Available in full strength and pre-diluted 50/50 blends

Your car, truck or SUV will need fluids at recommended levels to function properly, as well as chemicals that clean and treat your vehicle’s systems for optimal performance. O’Reilly Auto Parts stocks everything you need to top off fluid levels. You’ll also find all the cleaners, treatments and degreasers you need to keep your vehicle running strong.