Pennzoil multi-vehicle ATF automatic transmission fluid is a special blend of high-quality base stocks. The specially-balanced additive system guards against shudder, eliminates the need to stock ATF supplements and ensures a smooth, high performance driving experience. Carefully-balanced friction modifiers allow friction retention for long-life performance, while maintaining the smooth lockups required by a wide variety of vehicles. Enhanced oxidation, thermal stability and corrosion resistance help to sustain transmission cleanliness, oil life and year-round protection of the transmission components.