Unleash peak performance with our 75W90 GL-4 gear oil, a favorite among Nissan, Mazda, Mitsubishi, VW/Audi, Lotus, and Toyota enthusiasts. Crafted for swift shifts and optimal synchronizer friction, this gear oil is brass synchro-safe, free of reactive sulfurs found in most GL-5 oils. It banishes notchy shifting, even in cold conditions, and meets viscosity requirements for 75W, 80W, and SAE 40, 10W40, 15W40 motor oils. Red Line's MTL, MT-85 & MT-90, designed for diverse transmissions, ensure excellent gear and synchro protection. Compatible with various transmissions, it excels in high- and low-mile applications, offering a balanced slipperiness for smoother shifts in any climate. This 946ml bottle is a testament to Red Line's commitment to superior lubrication technology ? the choice for those who demand the best for their vehicles.

Elevate your vehicle's performance with our advanced lubricant, surpassing SAE 75W140 thickness. Balancing the strength of 80W gear oil and fluidity of 30W motor oil, it ensures excellent low-temp flow and enhanced cold shifting. Ideal for racing differentials, this unique formula with solid microscopic particles provides low drag/high protection. Designed for wet sump transmissions and differentials, each 946ml bottle delivers innovation and reliability for optimal racing conditions.

Enhance your vehicle's performance with our cutting-edge gear oil additive, meticulously formulated for compatibility with both petroleum and synthetic gear oils. Elevate your driving experience with temperature reductions of up to 50?F during break-in, ensuring a seamless and efficient process. Say goodbye to chatter in clutch-type limited slip or posi-traction units by adding 1oz incrementally for optimal results. Crafted from fully-synthetic formulas derived from polyol ester base stocks, our additive delivers exceptional lubrication under extreme conditions. Benefit from a high viscosity-index (VI) that maintains constant viscosity and film thickness across diverse temperature changes. Ester base stocks and friction modifiers enhance slipperiness, minimizing sliding friction in hypoid gears and lowering operating temperatures. Our product boasts superior shear stability and reduced oxidation compared to other synthetics and conventional gear oils, surpassing API GL-5 specifications. Engineered to provide maximum protection and enhance differential efficiency, it contributes to better mileage, longer drain intervals, and reduced wear. Meeting the performance requirements of GM 1052358, Ford M2C118-A, 19B546-MA, Chrysler 4318060, and most imports, our additive is a trusted choice. Follow our recommended dosage of 4% for preventing limited slip chatter in broken-in units or 4 to 8% for the break-in of new differentials. Bid farewell to excess wheel spin and reduced traction?opt for Red Line 75W90NS with the Red Line Limited-Slip Differential Friction-Modifier/Break-In Additive until chatter disappears. This product significantly reduces friction during differential break-in, preventing rapid wear caused by high temperatures. Our additive is versatile and seamlessly compatible with both petroleum and synthetic gear oils, making it the ideal choice for discerning drivers. For non-limited-slip racing differentials and quick-change units using Red Line ShockProof Gear Oils, we recommend an additional 3 to 6% of Red Line Limited-Slip Differential Friction-Modifier/Break-In Additive. In a conveniently sized 118ml (4oz) bottle, this additive is your key to optimal vehicle performance. Trust Red Line for a breakthrough in differential care and improvement. Drive confidently with our advanced solution, designed to exceed expectations and enhance every journey.

Elevate your vehicle's performance with our advanced fully-synthetic ester formula. Ideal for passenger cars, light trucks, high-performance vehicles, and marine applications, it offers exceptional wear protection, friction reduction, and high detergency for extended drain intervals. Experience improved fuel economy, enhanced ring seal, and superior high-temperature stability. Our formula, compatible with both conventional and synthetic oils, ensures efficiency and power with every 946ml. Trust in API Service Class SM/SG/CF/CJ-4/CI-4, Viscosity Grade SAE 5W40, and a Viscosity Index of 170. Unleash innovation for peak performance in every drop.

Revolutionize your vehicle's performance with our advanced fully-synthetic ester formula. Ideal for passenger cars, light trucks, performance vehicles, and marine applications, it ensures exceptional wear protection and friction reduction across diverse conditions. Boasting high detergency for extended drain intervals and enhanced cleanliness, our formula delivers improved fuel economy and ring seal for increased power. With superior high temperature stability and oxidation resistance, it outshines other synthetics, providing a thicker oil film and minimized evaporation. Compatible with both conventional and synthetic motor oils, this 946ml powerhouse meets API Service Class SM/SL/SG/CF standards. Unleash the future of engine care in a single bottle.

Discover peak performance with our fully-synthetic ester formula designed for passenger cars, light trucks, high-performance vehicles, and marine applications. This advanced solution ensures exceptional wear protection, friction reduction, and high detergency for extended drain intervals and increased cleanliness. Experience improved fuel economy, enhanced ring seal for more power, and superior high-temperature stability. With a viscosity grade of SAE 15W50 and compatibility with conventional and synthetic oils, our product offers optimal lubrication, efficiency, and power for your engine. Trust in our 946ml offering for unmatched protection and performance. Drive with confidence and choose excellence for your vehicle's needs.

Revitalize your driving experience with our high-performance transmission and transaxle fluid. Expertly designed for seamless shifting across diverse temperatures, this formula is trusted by elite brands like Ferrari, Porsche, and Subaru. Ideal for muscle cars and renowned transmissions, it contains extreme pressure additives for unparalleled protection without sacrificing slipperiness. Tailored for synchro engagement, it lacks friction modifiers and boasts improved copper corrosion protection, extending synchro life. Perfect for weak limited-slip differentials, it's also compatible with Red Line Limited Slip Friction Modifier for precision tuning. Recommended for racing with clutch-type LSDs, it meets top standards (API GL-5, GL-6, MT-1, MIL-L-2105E, SAE J2360) and offers optimal friction for manual transmission synchronizers. Explore our diverse lubricant range, including MTL, MT-85, and MT-90, ensuring excellence in both high- and low-mile transmissions. Compatible with various oils, it excels in all climates. Elevate your driving with Red Line ? innovation meets excellence in every drop. Available in a convenient 946ml container.

Discover peak performance with our Red Line gear oil, a premium choice for passenger cars, light trucks, and racing vehicles. Packed with extra friction modifiers, it's ideal for clutch-type limited-slip differentials. API GL-5 compliant, its fully-synthetic formula, based on polyol ester, ensures superior lubrication in extreme conditions. With a high viscosity-index for consistent performance in varying temperatures, it excels in shear stability and oxidation reduction. Engineered to exceed API GL-5 specs, it provides unparalleled protection, boosting differential efficiency for better mileage, extended drain intervals, and minimized wear. Elevate your vehicle's performance with Red Line's 946ml solution.

Elevate your engine's performance effortlessly with our advanced formula, meticulously crafted to clean injectors, carburetors, valves, and combustion chamber deposits. Boasting powerful detergents, it achieves nearly 100% efficiency in just one treatment, reducing the need for octane by up to two points. The synthetic upper cylinder lubricant enhances longevity, making it ideal for neglected vehicles with a one-bottle-per-tank solution. For ongoing maintenance, smaller doses work wonders, treating up to 100 gallons. Safe for continual use, our discreet yet powerful 443ml (15oz) solution ensures peak performance. Also available in a 4oz dosage for Motorcycles. Unleash the full potential of your vehicle with our cutting-edge Complete Fuel System Cleaner.

Elevate your vehicle's performance with our advanced ATF, allowing operation at temperatures up to 70?F higher while maintaining thicker viscosity. Ideal for Dexron III?, Dexron II?, Mercon?, or GL-4 gear oil applications, our ATF minimizes evaporation, reducing varnish on valves and clutches in extreme conditions. Red Line leads with the widest selection of fully-synthetic ATF, each offering improved thermal stability, consistent viscosity, and lower volatility. Experience high-temp operation without varnishing, extended drain intervals, and exceptional durability. Explore the typical properties in a convenient 946ml size ? Red Line ATF, engineered for excellence in every drive.