I installed the mag-tech about two months ago since my stock diff leaked since i have owned the truck and bought it from SDHQ and put in just what they sent me 4 Quarts of Lucas Oil 75w-140 Synthetic Trans & Diff Lube 1 Quart of Lucas Oil 75w-140 H/D Oil Stabilizer.i put it all in and no leaks.super easy to install.
Is it a kit on there page? Looking into this since Germany is more mud and water than sand and speed.