Lucas Sure-Shift Semi-Synthetic Automatic Transmission Fluid is a blend of high quality base stocks and synthetics, blended together with a special additive package not found in other automatic transmission fluids. It?s designed to withstand high temperatures and high pressures without thinning or foaming. It?s formulated with extra detergents and anti-wear agents for longer fluid life and less component wear. It also contains lubricity agents for smooth, precise shifting. Lucas Sure-Shift ATF is a must for all hard working and high performance transmissions. Not recommended in CVT and transmissions requiring Ford Type F.