Fully synthetic, PAO-based formula. An A.P.I GL-5 rated gear lubricant formulated to SAE 75W-140. Provides superior lubrication & protection for gears. Helps prevent wear, pitting & corrosion. Excellent shear stability & fluidity in extreme high or low temperatures. Allows longer drain life with a shear-resistant formula. Eliminates the need to inventory & use multiple gear oils. NOTE: Limited-slip differentials require the use of MOC Limited-Slip Concentrate #0149 with Gear Guard.