diff fluid

97stoker350 · Jul 14, 2012

Any reccommendations

TARM · Jul 14, 2012

A real synthetic 75w/140. This is what OEM had in it to start with.

As for brands I run all Schaeffers fluids so I run their #167 Moly Full Synthetic Gear Lube 75w140

Mobile 1 is a more locally available choice as well.

97stoker350 · Jul 15, 2012

what about lucas or are they just an advertisement

TARM · Jul 15, 2012

As long as you get the syn version its looks to be a true POA group IV. If you have a LS unit in there wait to add the additive to see if you need it. Some formulas already have enough in them. What I was always told was to add just enough so that it does not start to lock in turns and to stop there. That is if your unit does not already need rebuilding and slips regardless. Doubt it would matter then LOL

PatriotHauling · Jul 22, 2012

I recommend Valvoline synthetic. Comes with the LS additive too.

Zaairman · Jul 22, 2012

97stoker350 said:
what about lucas or are they just an advertisement

I have Lucas in my truck now. Cheaper than Royal Purple (which I had in my truck before). No complaints about either. Just use a quality synthetic and you'll be good to go.