Royal Purple

Royal Purple Max-Boost is a concentrated octane booster and fuel treatment that raises gasoline octane, stabilizes fuel, and reduces engine knock for high-performance and forced-induction engines. Designed for racers, performance enthusiasts, and anyone running demanding engines, this 16 fl oz can of Max-Boost combines...

Royal Purple HMX SAE 5W-30 is a high-mileage synthetic motor oil engineered to protect worn engines, rejuvenate seals, and reduce oil consumption for vehicles over 75,000 miles. If your car or light truck has seen many miles, its lubrication needs shift: worn bearings, hardened...

Royal Purple 0W-40 API-licensed synthetic motor oil is a high-performance engine lubricant formulated to protect, clean, and improve efficiency in gasoline and diesel engines. This 1-quart bottle of Royal Purple 0W-40 combines premium base stocks with the brand’s proprietary additive package to deliver broad-temperature...

Royal Purple Max Cycle 10W-40 is a full-synthetic motorcycle oil formulated to protect high-stress 4-cycle engines and wet-clutch transmissions while improving performance and engine cleanliness. Designed for both air-cooled and liquid-cooled 4-stroke motorcycles, Royal Purple Max Cycle combines a 10W-40 viscosity profile with Synerlec...

Royal Purple Purple Ice is a concentrated radiator additive that lowers coolant surface tension to improve heat transfer, protect against corrosion, and lubricate water-pump seals. If your vehicle runs hot, you want a product that enhances coolant performance without replacing existing antifreeze chemistry. Purple...

Royal Purple ROY01311 HP 2-C is a full-synthetic 2-stroke pre-mix oil engineered to boost power, lower operating temperatures, and keep combustion ports and plugs clean in high-performance 2-cycle gasoline engines. This high-performance 2-cycle oil is formulated for racing and other demanding pre-mix applications where...

Royal Purple Synchromax Transfluid 1 quart is a synthetic, light-viscosity lubricant designed for manual transmissions, transfer cases and 2-cycle motorcycle gearboxes that call for ATF-style or low-viscosity oils. Engineered with Royal Purple’s proprietary Synerlec additive technology, Synchromax blends synthetic base oils and friction-stable chemistry...

Royal Purple 31140 HPS 10W-40 is a fully synthetic, high-performance street motor oil formulated with Synerlec and zinc/phosphorus anti-wear chemistry to protect modified and performance engines. Designed for drivers who demand more than factory-fill lubricants, this Royal Purple HPS 10W-40 combines a robust additive...

Royal Purple Max Gear 75W-90 is a high-performance synthetic gear oil formulated to protect heavily loaded gears, reduce noise and heat, and extend component life. Max Gear 75W-90 (SKU 01300) is a premium full-synthetic gear lubricant engineered for demanding automotive, truck, RV, and marine...

Royal Purple MAX GEAR 75W140 is a synthetic, limited-slip compatible gear oil formulated to protect and smooth the operation of differentials and manual transmissions. Engineered for high-pressure gear applications, this 1-quart bottle of 75W140 MAX GEAR uses synthetic basestocks and friction-modifying additives to resist...

Royal Purple Max-Tuff is an ultra-tough synthetic assembly lubricant that bonds to metal surfaces to reduce metal-to-metal contact and protect against rust and corrosion during reassembly and service. When you rebuild, repair, or reassemble machinery, the right assembly lubricant prevents wear and eases installation....

Royal Purple 51130 is a 5-quart, API‑licensed SAE 10W‑30 synthetic motor oil engineered to improve engine protection, compatibility, and performance for gasoline and diesel vehicles. Built from advanced base oils and Royal Purple’s proprietary additive package, this motor oil is formulated to deliver better...

Royal Purple HMX SAE 10W-30 is a high-mileage synthetic motor oil formulated to reduce wear, restore seal flexibility, and clean older gasoline engines with more than 75,000 miles. Designed for seasoned engines, this 5-quart pack of Royal Purple HMX combines zinc/phosphorus anti-wear chemistry with...

Royal Purple 11487 Engine Break-In Oil 10W30 is a mineral-based, fully formulated break-in lubricant designed to promote ring seal and protect camshafts, lifters, and rotating assemblies during an engine's initial run-in period. When assembling or rebuilding an engine, the first miles are the most...

Royal Purple SAE 5W-40 is a fully synthetic, API-licensed motor oil engineered to protect and optimize gasoline and diesel engines across a wide temperature range. This 1-quart case of six bottles contains Royal Purple's API SN licensed SAE 5W-40 high-performance synthetic motor oil, formulated...

Royal Purple HPS 20W-50 is a full-synthetic high-performance motor oil formulated with Synerlec additive technology and elevated zinc/phosphorus anti-wear agents to protect and enhance engines operating under heavy loads and high temperatures. This six-quart case contains Royal Purple's HPS (High Performance Street) 20W-50 motor...

Royal Purple HMX w/Synerlec 5W-20 is a premium synthetic motor oil engineered to protect and revive higher‑mileage engines by reducing wear, controlling oil consumption, and keeping internal parts clean. Royal Purple HMX combines fortified zinc/phosphorus anti‑wear chemistry with the brand’s Synerlec® proprietary additive system...

Royal Purple 04311 HP 2-C is a full-synthetic pre-mix 2-stroke engine oil engineered to boost power, lower friction and keep combustion ports and plugs cleaner in high-performance racing applications. Built for demanding two-stroke racing engines, this one-gallon concentrate from Royal Purple delivers the thermal...

Royal Purple Max-Boost is a concentrated octane booster and fuel-stabilizing treatment designed to raise gasoline octane and reduce engine knock in performance and racing applications. Max-Boost from Royal Purple is formulated for drivers and racers who want a fast, reliable way to increase fuel...

Royal Purple 18000 Max Atomizer is a concentrated fuel system and injector cleaner in a convenient 6 oz size, sold here as a 10-pack for regular maintenance and fleet use. If your engine has sluggish throttle response, uneven idle, or you want to reduce...

Royal Purple Max-Clean is a concentrated 3-in-1 fuel system additive that cleans injectors and intake valves, stabilizes fuel for storage, and helps recover lost efficiency in gasoline engines. Designed for modern gasoline engines, Royal Purple Max-Clean combines detergency, stability, and friction-reduction chemistry in a...

Royal Purple Max Gear 75W-90 is a high-performance hypoid gear oil sold as a case of three 1‑quart bottles, engineered to protect heavily loaded differentials and manual transmissions while improving drivetrain efficiency. Max Gear combines premium synthetic base oils with Royal Purple’s Synerlec additive...

Royal Purple SAE 5W-20 is a fully synthetic, API‑licensed motor oil engineered to reduce wear, support fuel economy, and protect modern gasoline and light‑duty diesel engines. This premium 5W‑20 synthetic motor oil comes in one‑quart containers sold as a case of six and is...

Royal Purple SAE 0W-20 is a full synthetic, API-licensed motor oil formulated to lubricate and protect modern gasoline and diesel engines while supporting better fuel economy and reduced wear. This 1-quart, case-of-six package contains Royal Purple's API SN / Dexos1-compatible 0W-20 high-performance synthetic motor...

Royal Purple HPS 10W-40 is a full-synthetic high-performance motor oil formulated with Synerlec additive technology and elevated zinc/phosphorus for superior protection in performance and modified engines. This Royal Purple HPS 10W-40 synthetic motor oil (case of six 1-quart bottles) is engineered for drivers seeking...

Royal Purple HPS 10W-30 is a full synthetic motor oil formulated with Synerlec additive technology to protect high-performance and modified engines while improving mechanical efficiency. This case contains six 1-quart bottles of Royal Purple HPS 10W-30 synthetic motor oil (SKU 36130-6PK). Engineered for drivers...

Royal Purple HPS 5W-20 is a full-synthetic, Synerlec-enhanced motor oil engineered to protect high-performance and modified engines while improving efficiency under a wide range of temperatures. This oil is a full-synthetic SAE 5W-20 designed for modern gasoline engines and formulated with Royal Purple's proprietary...

Royal Purple HPS 5W-30 synthetic motor oil is a high-performance street-grade lubricant engineered to protect modified and out-of-warranty gasoline and diesel engines while improving power delivery and component life. Built for drivers who push their vehicles beyond factory conditions, Royal Purple’s HPS (High Performance...

Royal Purple 06300 75W-90 Max Gear Oil is a high-performance synthetic-blend hypoid gear lubricant sold as a 6-quart case designed to protect differentials, manual transmissions and lower marine gear units that call for API GL-5 or GL-4 fluids. This Max Gear 75W-90 formulation combines...

Royal Purple Max ATF is a high-performance synthetic automatic transmission fluid engineered to lower operating temperatures, strengthen film protection, and prolong transmission life. Designed for modern passenger vehicles and heavy-duty use, Royal Purple Max ATF blends a synthetic base with advanced additives to resist...

Royal Purple Max-Cycle 10W-40 is a high-performance synthetic motorcycle oil engineered for stressed 4-cycle engines and wet-clutch transmissions, sold here as a case of six 1‑quart bottles. Designed for riders who demand durable protection and consistent performance, Max-Cycle blends select synthetic base stocks with...

Royal Purple Synchromax is a high-performance manual transmission fluid sold as a set of four 1-quart bottles, engineered to improve shift feel, reduce gear noise, and protect gears across a wide temperature range. If your vehicle’s gearbox calls for automatic transmission fluid, multi-viscosity motor...

Royal Purple Max-Clean is a concentrated fuel system cleaner and stabilizer formulated to remove combustion deposits, restore lost performance, and stabilize fuel for storage. Max-Clean is a concentrated chemistry designed to clean injectors, intake valves, and combustion chambers while stabilizing stored fuel. It works...

Royal Purple Max-Gear 75W-140 is a fully synthetic hypoid gear oil formulated to protect heavily loaded differentials and gearsets while helping maintain smooth driveline performance. Engineered for demanding automotive and light truck applications, this 3-quart pack from Royal Purple delivers a high-performance lubricant option...