Which oils should I use with the transmission and diff?
I heard if I use wrong oil, the shift feel would not be as soft and could damage the transmission

Which oils should I use??

 

Many folks here in this forum and outside of this forum as well using with great results these fluids.

 

only use Diaqueen in the TC and rear diff

 

I just replaced my transmission, differential, and transfer case fluids last weekend with Redline products. So far, working awesome. Went with the Redline "Cocktail" in the transmission and definitely feel a difference with shifting, a lot smoother and less notchy.

 

Diaqueen only

 

So if I am using Redline fluids, how long should it be before my transfer case goes out because I didn't use Diaqueen? I always read people say to only use Diaqueen, but I know plenty of people who use the redline fluids for years with no ill-effects.

 

Mitsubishi factory MR trans oil,Motul 300Gear,Redline MT90 or the Redline cocktail for transmission.i wouldn't deviate from these.

for the t-case on basically stock cars use the Diaqueen,but for high hp cars or cars with hardened ring+pinion like on the Jack,Shep or Tre staged rebuilds use the Redline Shockproof just like they recommend.


for the rear use Diaqueen or Redline Shockproof.

 

I take my information from TRE. I figure John has more experience with Evo transmissions and building them than the commenters here. (no offence guys/gals)

http://www.teamrip.com/manual_transm...tion_info.html

http://www.teamrip.com/transfer_case...tion_info.html

http://www.teamrip.com/rear_axle_hyp...tion_info.html

 

I switched to Severe Gear and regret it. Now I have a leak and shift grinds. I don't think it's the fluid being bad but the switch of fluids suddenly after 50k miles. I'm sticking to Diaqueen from here on out.

 

Same here!

MT-90 in transmission

Diaqueen in Transfer case

Redline in rear diff most recently

 

The guys at jacks trans told me the red cocktail was on the border of friction modifiers and recommended the oem fluid for the trans. For transfer case and rear just like masonh said diaqueen or redline heavyweight shockproof depending on power output.

 

I used royal purple on a count it was the only oil i could get next day to make the races and it never gave me any issues. Was a shep tranny and exedy twin.

 

Diaqueen all around. I've used AMSOIL, and to me their mtg just doesn't shift as smooth. I've also tried the redline cocktail and it felt no different than the mtg.

 

Jacks actually warns against using royal purple on there website. You might want to check with sheps about that.

 

Tranny and diff I use Redline
Transfer case is Daiqueen, anything else will burn it up
Motor oil is AMSOIL