Tyler Yates
Member
What gear oil are you guys running in the truetrac? See the truetrac unit recommends 80w90 and the ram rear end calls for 75w140.
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Copy. Ill go with the 80w90 then.If you’re installing an aftermarket carrier then you should listen to the manufacture.
If you’re breaking in a brand new one I would not run a synthetic. Do a couple real short intervals and then jump to synthetic
JMO.
Sent while firmly grasping my redline lubed RAM [emoji231]
Rodge. I guess i go ahead with ram specs then. Cheaper to buy anywaysSince the main wear areas that need film strength are the gears and bearings, I’d take Ram’s spec. Every manufacturer has lowered viscosity everywhere possible. They went with 75W-140 because of some issue with lower viscosity. IMO.
Depending on what temperature you’re operating at, the two oils are going to cross over each other anyway.
Unless you’re operating under some extreme loads, I doubt it makes a difference. Probably none of us could tell any difference in how it drives or how it wears.
TruTracs are not lube sensitive the same way clutch type diffs are.
More info needed, which synthetic oil? Almost any group 3 synthetic you buy off the shelf will have lsd additive in the formula. I get it, they say use group 2 so just use group 2, but I'm saying some synthetic formulas offer benefits if someone wanted to use those. If not keep it simple use the group 2 stuff, group 2 is better than ever before because of the value of waxes, so more of these have been taking out then years past.