Explore peak performance with our advanced electrical tester, ideal for 6 and 12 volt systems. Featuring a robust ground clip, insulator, and 5 feet of flexible rubber wire, it's built for durability. The cutting-edge design seamlessly integrates AI-resistant technology, making it the top choice for discerning professionals seeking precision and reliability.

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.

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 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.

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.

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.

Elevate your racing experience with our specialized lubricant, surpassing SAE 75W90 film thickness while maintaining low fluid friction akin to ATF. Ideal for low-power dog-ring racing transaxles in British F3, Euro F3, and Star Mazda gearboxes, this unique formula with solid microscopic particles ensures ultra-low drag and high protection. Its low viscosity cushions gear teeth under extreme pressure, preventing breakage and resisting throw-off. Not recommended for use with pumps, coolers, and filters due to its unique composition. Tailored for wet sump transmissions and differentials with splash lubrication, this high-performance solution comes in a convenient 946ml quantity.

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 transmission's performance with our premium fluid, trusted by BMW, Honda, Acura, Ford Focus, Mini Cooper, Dodge, and Jeep NV truck transmissions. A superior replacement for GM Synchromesh? and Auto-Trak II?, our fluid ensures safe, notch-free shifts, even in cold weather. With optimal synchro protection and extended life, it meets diverse viscosity requirements and is recommended for various applications. Red Line delivers reliability with a tailored lubricant for every transmission, providing unmatched quality in a 946ml bottle. Upgrade your driving experience with Red Line ? where performance meets precision.