Lockers

[Muddytazz]

Do they take an additive in the gear oil or do you just use gear oil only? Oh and I'm talking a detroit in the 14ff and a true-trac in the front.

 

[readymix]

I e-mail Eaton about that same thing a few years ago.
They said that regular 80-90 is all that is required in the Detroit. Synthetic is good to.

I know that I pasted the e-mail in a thread here a while ago. Could search for it.

 

[southernspeed]

Do they take an additive in the gear oil or do you just use gear oil only? Oh and I'm talking a detroit in the 14ff and a true-trac in the front.

Regular oil. Ltd slips need additive.

 

[Thunder]

Both take regular 90 wt. Tru trac does not need friction additive because it has no clutches.
Clutch type LSDs like the Track Lok need additive.