Genuine Ford Fluid XY-75W90-QLS SAE 75W-90 Synthetic Axle Lubricant - 1 Quart Specifically recommended for use in the limited-slip differential of the DANA model 80 rear axle to eliminate chatter Approved by Ford engineering for use in Dana model 60 and model 70 rear axles which originally specified SAE 90 It has enhanced wear protection for hypoid gears Recommended by Ford Motor Company meeting warranty requirements Motorcraft 75W-90 synthetic axle lubricant is a premium-quality gear lubricant