This is a very simple task and is extremely effective when it comes to the performance of your vehicle. 

After I finish a diff build and come to the final process of reinstalling my differential, I apply Cowrc Udder Butter. Having some grease is very important to the performance and longevity of your gearbox. Your gears are working hard and taking a beating during your race or bash session. They need proper lubrication to maintain a prolonged life and proper mesh. 

Udder Butter has you "covered" with a smooth, quiet, prolonged life and high performance gearbox. See ya at the.track.

Udder Butter can be purchased at Cowrc.com. Use coupon code "PROTIP"15 for 15 percent off your purchase.