Red Line 30504 D4 Synthetic Automatic Transmission Fluid (ATF) - 1 Quart (4 Pack)

Red Line's D4 Automatic Transmission Fluid (ATF) is Red Line's most popular and versatile ATF. D4 is suitable for use where Dexron III, Dexron II, or Mercon fluids are recommended. D4 ATF is a fully-synthetic product designed to satisfy the improved low-temperature requirements which will be in the new Dexron IV specification, and the improved shear-stability requirements which will be part of the new Mercon specifications. D4 ATF also provides a GL-4 level of gear protection, making it a superior product for transmissions and transaxles like the Corvette's T-56. The balanced frictional characteristics provide smooth and consistent shifts for extended drain intervals. The superior stability compared to petroleum ATFs allows high-temperature operation without varnishing valves and clutches which leads to transmission failure. It's stability allows high-temperature operation without varnishing valves and clutches. Also provides improved shifting in cold weather. Red Line Synthetic Automatic Transmission Fluids are designed to provide improved thermal stability. The products identified as Synthetic ATF, Synthetic D4 ATF, and Synthetic C+ ATF have better thermal stability and lower volatility characteristics than a petroleum ATF and provides a much lower viscosity at lower temperatures, providing much quicker shifting in cold weather.

• EXCELLENT - gear and synchro protection, balanced slipperiness for easier shifting in cold climates
• ALSO USED WITH - manual transmissions and transaxles like T-5, T-45, T-56 and late-model BMW, provides a GL-4 level of gear protection
• MOST VERSATILE ATF - use where Dexron III, Dexron II, Mercon and Mercon V fluids are recommended, for use in automatic, manual transmissions and power steering
• POPULAR TRANSMISSION FLUID FOR - 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
• WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises