Ok so can I use redline 75w90 gear oil on my T case and rear diff? Or do I use shockproof heavyweight on my T case and 75w90 on the rear diff. I've tried looking up old threads but just got confused. Thanks!

 

stock t-case and rear diff? Use OEM Diaqueen. If it's modded then use what your builder suggests. Some ppl have had bad luck when using non oem fluids on their stock parts and some swear by it. My question - Is it worth the risk?

 

Yeah stock t case and rear diff. Not worth the risk. Hmm