Diff. Fluid, What's Everyone Using?
 

I am swapping out my 3.3 FD with a 3.5 FD in the next few weeks. I have the Vortech SC and am wanting faster acceleration and track times.

Does the fluid have to be drained when removing the pumpkin? I plan on adding better fluid when I do the swap. So, what fluid is everyone running and what is the best out there? Who has the best prices on this stuff?

TIA?
Zach

I had the shop put in Redline

Thanks. Where would I be able to buy it from? Is there any certain weight I need to use?

What weight are you using? I ONLY see 75W-90 from Redline and I read that we should be using 80W-90.

i use amsoil 75w-140 with a friction adder (ford, i think)... 'course that's just due to the 3.9 gears and the clutch-type :)

I just ordered some AMSoil 75W-90.

I run Redline 75W-90....that standard stuff has a friction modifier in it. I switched to this after breaking in my Nismo diff on the Nismo fluid....Its MUCH quiter now and runs great. I may be switching to Amsoil soon though....Its easier to get my hands on. Also when I contacted Nismo about what oil to use post break in they said to run Royal Purple 75W-90....I just find out that Pep Boys carries this now so thats something to consider.

Nismo reccomended RP?

impressive, haven't really ever been convinced about the quality of RP products.

Yes they did. I had my Parts guy at the dealer email them. He forwarded me a copy of the response but I lost it....

ANy one have a link to Amsoil ?

I've been running Royal Purple 75W-90 for the last 15K miles. So far it's been great. I buy it at pep-boys.

I used a 50/50 mix of Redline MT-90 & MTL