Detroit true trac questions

[cplchris]

so i am going to be regearing in a few months and would like to install DTT's in both the front and rear differentials. my question is for anyone who is already running either the same or similar setup.

have you seen any effect on steering performance after installing the True Trac? please explain what setup you have with your answer.

 

[tjkj2002]

I ran the DTT up front for years before the SFA swap(had a ARB in the rear) and only noticed for about the 1st week the steering wheel would return to center faster but quickly got used to and never noticed it ever again and that was it.

 

[cplchris]

Thanks, and do tbey require any additive to the diff fluid or should I continue to run regular gear oil?

 

[John3seventeen]

Regular gear oil

 

[tjkj2002]

Regular gear oil

X2.............


That means non-synthetic gear oil.

 

[smittyfromPA]

I have a DTT in the front and a Trac Loc in the rear. When I re-geared the shop used synthetic in both diffs and said I wouldn't need the friction modifier for the Trac loc. I was skeptical but they supposedly know their $h!t so I let them do it.
This was about 10K miles ago. No problems that I can tell (I have a whine under acceleration but that's another story i think...), but now i wonder if I should switch back to dino oil when I service the diffs again in a couple thousand miles.

 

[CzarKJ]

The DTT manual that comes with it says premium mineral (regular dino but the good stuff). And NOT to use synthetics in bold though on one page its worded a bit weird.

 

[tjkj2002]

I have a DTT in the front and a Trac Loc in the rear. When I re-geared the shop used synthetic in both diffs and said I wouldn't need the friction modifier for the Trac loc. I was skeptical but they supposedly know their $h!t so I let them do it.
This was about 10K miles ago. No problems that I can tell (I have a whine under acceleration but that's another story i think...), but now i wonder if I should switch back to dino oil when I service the diffs again in a couple thousand miles.

Most your "off the shelf" synthetic gear oils already have friction modifier in it so need to add more.