Red Line Oil 30505 D4 Synthetic Automatic Transmission Fluid 1 Gallon

Red Line D4 ATF is their most versatile automatic transmission fluid, designed for use where Dexron III, Dexron II, Mercon, and Mercon V fluids are recommended and provides a GL-4 level of gear protection. This fully synthetic formula delivers superior performance in both automatic and manual transmissions, offering excellent cold-weather operation and high-temperature protection without varnishing valves and clutches.

Key Features:

• Suitable for Dexron III, Dexron III H, Dexron II, Toyota T-IV, Hyundai, Voith, ZF, Nissan Matic-J, Honda Z-1, Mercon, and Mercon V specifications
• Compatible with Toyota Type T-III and T-IV, Honda ATF-Z1, Nissan Matic D, J & K, Diamond SP-II, SP-III, Mazda ATF M-V, most BMW and Audi/VW automatic transmissions
• Can be used with manual transmissions and transaxles like T-5, T-45, T-56, and late model BMWs
• Balanced frictional characteristics provide smooth, consistent shifts for extended drain intervals
• Reduced oxidation and lower volatility at high temperature
• Superior shear stability compared to petroleum-based ATF fluids

Red Line's fully synthetic D4 ATF provides exceptional thermal stability and improved low-temperature shiftability, making it ideal for high-performance and racing applications as well as daily drivers. The advanced formula includes GL-4 gear protection, making it especially well-suited for transmissions and transaxles that require both ATF characteristics and gear oil protection, such as the Corvette T-56.

Each gallon jug contains premium synthetic automatic transmission fluid manufactured to Red Line's exacting standards. Since 1979, Red Line has been trusted by racers and enthusiasts for products that perform and protect better than conventional alternatives.