This is a bottle of Castrol Transmax Limited Slip LL 75W-140 axle fluid. It is a fully synthetic hypoid gear oil formulated for use in both conventional and limited-slip differentials. It is approved for use in high-performance vehicles such as the BMW M-Series and Mercedes-Benz AMG limited slip differentials. It is suitable for high-power rear-wheel-drive road, track, or competition cars. It provides exceptional stability at high temperatures to protect components under extreme loads.