Product SpotLight: RBP Diff Cover

  |   RBP Diff Cover For those who tow, getting rid of heat is priority one. It's common sense: More oil means more cooling, and many people don't realize how much heat a hard-working differential generates. We usually recommend swapping to synthetic oil and replacing the factory diff cover with a larger-capacity aftermarket model, like the RBP (Rolling Big Power) shown here. The aluminum RBP covers hold as much as 25-percent more gear lube and are lined with heat-dissipating cooling fins. $295. RBP; 951/272-9090; www.rollingbigpower.com.