Castrol GTX ULTRACLEAN - with its proprietary sludge buster - is our cleanest GTX ever. Its unique Double Action formula cleans away old sludge** and protects against new sludge formation, giving you more control over today's challenging conditions. Help extend the life of your engine with GTX ULTRA...

Maximum Shear Stability To Help Resist Viscosity Shear Down In High Performance Engines And Transmissions Exceptional Thermal Stability To Help Resist Oxidation And High-Temperature Degradation Outstanding Protection Against Wear Of Engine And Transmission Components Enhanced Lubrication To Help Mai...

Engines are subjected to extreme loads even under normal driving conditions such as town and commuter traffic, short journeys and traffic jams. This sort of use causes the build-up of deposits on valves, in the combustion chamber and in the carburetor. Valve Clean cleans valves, injection systems, i...

UseBuilt for use with ratchets and breakers bars, the TEKTON 4929 Oxygen Sensor Socket makes removing and installing oxygen sensors on vehicles with computer-controlled engines easy.PerformanceA heat treated, chrome vanadium steel construction ensures that the socket will take on oxygen sensors time...

This tool set removes broken spark plugs from 2004 and newer Triton 3 valve per cylinder engines. The set includes a unique porcelain pusher tool and a tapered left-hand thread remover for removing the broken spark plug without leaving the porcelain in the engine cylinder. Porcelain pusher is used t...

Check for spark on gasoline engines used in import and domestic cars and trucks plus small engines.

Royal Purple API-Licensed Heavy Duty SAE 5W-20 High Performance SN Synthetic Motor Oil is fully synthetic - not made from crude oil like traditional motor oils. It's used to lubricate, clean, and cool engines with the utmost efficiency. Motor oil varies in weight and viscosity, as well as additives...

Max-Clean is a state-of-the-art fuel system treatment that cleans injectors, restores fuel economy and reduces both engine buildup and tailpipe emissions. Max-Clean’s proprietary technology targets both the intake system and combustion chamber and is effective on the entire spectrum of engines on th...

Royal Purple Max-Boost - 16 Ounce Can is a high-performance octane booster with fuel treatment that increases gasoline octane, reduces emissions, and enhances engine performance while stabilizing fuel. Max-Boost is formulated with MMT, which delivers the best octane enhancement to help eliminate eng...

This is an air filter cartridge for 3.5-6.5 HP Quantum engines, 625-1575 series.

Treat your RV generator engines with the quality Cummins OnaMax 15W40 oil. The factory tested oil provides maximum protection for your engine plus it's formulated to reduce consumption and engine wear due to high temperature oil oxidation and viscosity increase.

Long lasting, superior lubrication that resists water and salt spray. Drives out moisture that can cause electrical failures and hard starting. Penetrates deep through rust and corrosion to loosen frozen parts, Starts wet engines.