Based on our Transmission Fluid Change Kits developed over 10 years ago, the BG Ultra Guard Differential Fluid Kit, with your choice of Viscosity and Additive Packages, allows you to perform a differential service your Solid Axle 8.8 Differential that is NOT equipped with a differential cover that provides a drain plug.

We recommend using the 75W-140LS Fluid in all Solid Axle 8.8" Street driven vehicles. Consult your owners manual.

BG Ultra-Guard® LS Full Synthetic Gear Lubricant is a universal, full synthetic API GL-5 rated gear lubricant blended to SAE 75W-90 viscosity. It provides the ultimate protection for driveline components, especially those requiring limited-slip function. It is formulated for increased thermal stability, improved seal performance, quieter operation, and unsurpassed protection against wear, pitting, and corrosion.

We include 3 Quarts (64oz) of Ultra-Guard, a pump, dipstick, Teflon sealant tape, differential cover sealant and Color Instructions.