Gear oil

[Muddytazz]

I'm having a brain fart here and can't find the answer that I'm searching for. I picked up a 14ff with 4.10's, rear disc's and a detroit and a D44, crossover ready, 4.10's and a truetrac locker

My question is, refilling the diff's do I need to put in an additive for the lockers or just straight gear oil?

 

[iwaxmyjimmy]

detroit not but truetrac im not sure. does the truetrac use clutches? if so then yes. Also most synthetic gear lubes have a friction modifier in it.

 

[mxfireman]

I picked up a 14ff with 4.10's, rear disc's and a detroit and a D44, crossover ready, 4.10's and a truetrac locker

I hate you!!! Why couldn't I have found them that cheap!

 

[user]

straight oil for the trutrac - it doesn't have clutches, has helical gears to do the locking. I don't remember how Dana works, but if it's positraction with clutches it needs a friction modifier additive. I use valvoline 85-140 w/25% Lucas Oil Stabilizer on my trutrac's.