🚗 Shift into Excellence with Red Line! Balanced slipperiness ensures effortless shifting, even in frigid temperatures. Perfectly suited for a wide range of vehicles, from manual to automatic transmissions. Red Line has been a leader in performance fluids since 1979, ensuring quality you can rely on. Designed to outperform competitors, providing peace of mind for your vehicle's transmission. Experience superior gear and synchro protection for seamless performance. Versatile Use Gear Protection Cold Climate Shifting Red Line 30505 D4 Synthetic Automatic Transmission Fluid is a high-performance fluid designed for both automatic and manual transmissions. With a capacity of 1 gallon and weighing 7 pounds, it offers exceptional gear protection, cold climate performance, and compatibility with various vehicle models, making it a versatile choice for automotive enthusiasts.