and $20 equus gauges from walmart pure junk? because I bought the 3 gauge cluster and I am going to install it soon. any tips for installation ? Also, I saw some Pensoil 80w90 GL-5 that claimed to be positive traction friendly and didn't require extra additives.. Would this be kosher if I happen to have a Gov lock (I've yet to check), and would it be OK to use this same gear lube for my front axle. (this is the only kind I saw that walmart carried in that weight. It was like 4 bucks a quart.