GM 1940768

GM 1940768 is an automatic transmission oil specification developed by General Motors for new 6‑, 8‑ and 10‑speed gearboxes, including the 6L80, 6L90, 8L45, 8L90, 10L80 series and their electronically controlled variants. Oil that meets this approval must have stable viscosity over a wide temperature range, high resistance to oxidation and shear stability, as well as special friction modifiers that provide smooth engagement of braking and clutch elements without excessive heating. Technical requirements include low foam, rapid cooling and protection against corrosion of metal transmission components, extending the service life of valve bodies and torque converters. The specification does not impose special requirements regarding SAPS, DPF or catalysts, as it concerns only the transmission system, but it is compatible with all GM transmissions that require Dexron VI. By using XENUM X‑TRAN 75W80 GL‑4/5 transmission oil, you achieve full compliance with GM 1940768 and guaranteed protection for your vehicle.