Red Line

Red Line 75W90 GL-5 is a fully synthetic hypoid gear oil formulated with friction modifiers for clutch-type limited slip differentials, sold in a 1-quart bottle for passenger cars, light trucks and racing use. Designed as a high-performance replacement for conventional 80W90 or SAE 90...

Red Line 42804 is a full‑synthetic V‑Twin transmission and gear oil formulated with shockproof additives to reduce shifting clunk and protect gears under heavy load. This 1‑quart bottle delivers a high‑performance synthetic lubricant engineered for powersports transmissions and final drives. Built to stand up...

Red Line 50104 is a full-synthetic 75W85 GL-5 hypoid gear oil formulated with friction modifiers so it can be used in clutch-type limited slip differentials while delivering high-load protection. This quart of Red Line 50104 replaces many conventional gear lubes across SAE 75W80, 75W,...

Red Line 50204 SAE 75W-80 API GL-4 is a manual transmission and transaxle lubricant formulated to protect gears and synchronizers while enabling smoother, quicker shifts. Designed for manual gearboxes and transaxles where GL-4 or synchromesh fluids are specified, this 1-quart bottle of Red Line...

Red Line 50504 MT-85 75W85 GL-4 is a high-performance manual transmission gear oil engineered to protect gears and synchronizers while delivering smoother, quicker shifts even in cold conditions. MT-85 is a purpose-built 75W85 GL-4 gear lubricant from Red Line designed for manual transmissions and...

Red Line 50604 MT-LV is a full synthetic GL-4 gear oil engineered to protect manual transmissions and transaxles while enabling smoother, quicker shifts at 70W/75W viscosity. If you service manual gearboxes, transaxles or high-performance synchronized transmissions, this Red Line formulation is built to meet...

Red Line 57914 is a full-synthetic 75W-140 GL-5 gear oil formulated with polyol ester base stocks and friction modifiers for use in hypoid limited-slip differentials. Built for high-stress drivetrains, this 1-quart bottle of Red Line 75W-140 provides resistant film strength and heat stability for...

Red Line 42504 20W-50 is a full-synthetic motorcycle engine oil formulated with PAO and ester base stocks plus elevated ZDDP to protect big-twin V-twin engines and maintain wet-clutch compatibility. This oil is engineered for heavyweight motorcycles that call for a 20W-50 viscosity — especially...

Red Line 58204 Heavy Shockproof Gear Oil is a fully synthetic, race-proven gear lubricant formulated to protect high-load differentials and racing rear ends while improving efficiency. Designed from polyol ester base stocks, this 1-quart formulation provides extreme film strength and slipperiness for demanding applications...

Red Line 58304 is a 75W-90 non-slip synthetic gear oil in a 1-quart bottle formulated to lubricate gears, reduce friction where required, and help maintain drivetrain efficiency. This high-quality synthetic gear lubricant from Red Line is designed as a universal-fit option for many manual...

Red Line 80319 Liquid Synthetic Assembly Lube is a 12-ounce, high–film-strength liquid formula designed to protect metal surfaces during engine assembly and long-term storage without clogging oil filters on initial startup. When building or servicing engines, components need protection from dry start wear and...

Red Line 12604 is a 20W-60 fully synthetic motorcycle motor oil engineered for air-cooled V‑twin engines, offering high film strength and increased viscosity for hot-weather or high-stress applications. If you ride a classic air-cooled V‑twin or have upgraded to big-bore or stroker kits, choosing...

Red Line 58404 Lightweight Shockproof Gear Oil is a high-performance 1-quart lubricant engineered for racing and high-load gearsets that need low-temperature flow, superior film strength, and protection against tooth breakage and throw-off. This specialized formula pairs a thinner low-temperature viscosity with an unusually strong...

Red Line 30404 is a concentrated power steering fluid formulated to reduce wear, minimize high-temperature breakdown, and maintain consistent pump performance in most hydraulic steering systems. This 1-quart bottle delivers a synthetic-based formulation designed to resist thermal degradation, lower evaporation and foaming, and help...

Red Line 80402 CV-2 is a high-performance synthetic grease cartridge formulated with red moly for heavy-duty protection of CV joints, wheel bearings, U-joints and other high-pressure drivetrain components. Designed for mechanics, racers and serious DIYers, this 14-ounce tube delivers a synthetic, molybdenum-disulfide-enhanced formula that...

Red Line 30504 D4 Synthetic Automatic Transmission Fluid is a high-performance, versatile ATF engineered to protect gears and synchronizers while providing smooth shifting across a wide range of automatic and manual transmissions. Designed by Red Line, a performance lubricant specialist since 1979, this 1-quart...

Red Line 80401 CV-2 is a high-performance synthetic grease fortified with red molybdenum designed to protect CV joints, wheel bearings, and U-joints under extreme temperature and pressure. Engineered for demanding automotive and industrial applications, this 14-ounce jar of CV-2 synthetic grease offers extended protection...

Red Line 15404 SAE 5W-40 is a fully synthetic ester/PAO motor oil formulated to deliver high detergency, better ring seal and extended drain capability for cars, light trucks and performance engines. Designed around a polyol-ester and PAO base, this 5W-40 grade balances cold-start flow...

Red Line 81403 Break-In Additive is a 16-ounce concentrated formula designed to add essential antiwear ZDDP and detergency to conventional motor oil, helping protect camshafts and valvetrain parts while allowing piston rings to seat during engine break-in. When building or rebuilding an engine, the...

Red Line 15304 is a 1-quart, fully synthetic SAE 5W-30 motor oil formulated with polyol ester/PAO base stocks to deliver high detergency, extended drain capability, and improved ring seal for passenger cars, light trucks, performance vehicles and marine use. This formulation blends polyol esters...

Red Line 30704 Full Synthetic D6 Automatic Transmission Fluid is a high-performance, full synthetic ATF formulated for modern automatic and some manual transmissions, delivering improved thermal stability, low volatility and OEM friction characteristics in a 1-quart package. This full synthetic transmission fluid from Red...

Red Line 60202 Lead Substitute 12 oz protects valve seats in engines designed for leaded gasoline while cleaning carburetor deposits and fuel injectors. This concentrated 12-ounce formula is made to help older engines that were built for leaded fuels by cushioning valve seats and...

Red Line 40603 is a 16-ounce synthetic two-stroke racing oil engineered to deliver cleaner combustion, improved power, and dependable protection for high-revving engines. This lightweight synthetic formulation is built for demanding two-stroke applications — from motocross and snowmobile racing to marine and recreational bikes....

Red Line MT-85 75W-85 GL-4 is a high-performance manual transmission gear oil engineered to protect gears and synchromesh while enabling smooth, positive shifting in a wide range of manual-drive vehicles. Designed for drivers and technicians who need reliable, long-lasting protection for manual gearboxes, Red...