ok guys, from what I read on this site seems like:

TRANSMISSION = redline MT90, BG synchroshift or Penzoil synchromesh

TRANSFER CASE = redline heavy shockproof or mobil 1 75W90

REAR DIFFERENTIAL = redline or mobile 1 75w90

* You can use the same fluids for the transfer case & rear differential = 75w90*

I got an evo7 with ACD/AYC........would these fluids be OK for my car?
Would it be recommended to change ALL these 3 fluids every year? I was told you only need to change them every 40,000 miles?

This is my weekend car so I dont use it that much. Maybe about 4,000 or less miles a yr. I've got around 11,500 miles on it. havent chnged the fluids yet.

HOPE THIS THREAD WOULD END THE CONFUSION ON W/C FLUID GOES TO WHERE

 

ya you use the same on all three. 75w 90 .. i'm pretty sure since thats what we use at our shop for all the mitsu cars. .. daym you need to drive more haha jus messn. not sure when you have to change your gear oil. but 40,000 sounds knda high. we usualy do it lke 30k but its all on you like how you drive it.

 

you don't use the same fluid on all three areas

 

I tried them all on my Evo7, this was and is the best combo found.

Tranny: BG Syncroshift

Transfer: Royal Purple 75/90

Rear Diff: Royal Purple 75/90

 

I just put in BG Syncroshift in the Transmission, and Redline 75w-90 in the Transfer Case and Rear Diff.

 

bg syncoshift in tranny....redline heavy shockproof in tranfer case and rear diff.... only been in for 2 days but it feels pretty good.

 

Is the Royal Purple called "max gear"?

 

I would use sae 90 in the transfer case. This is exactly what mitsu recommends, and a signifcant amount of people have killed the transfer case using 75/90, just my 2 cents. I personally will be using Royal purple max gear SAE 90 gl5 in both the t-case and rear diff. and a blend of Redline MTL and MT-90 in the trans.

 

I have a winding sound coming from my TC, will this heavy duty thicker fluid lessen the wind or make it worse??