I use motul 300v it works gr8!

 

I currently have Royal Purple fluid in my trans and I'm switching back to BG. RP makes awesome products but their gear oil feels like shifting through cold pudding.

 

The transfer case and rear diff on evo's require very special oils. This is mainly, IIRC, due to the various systems inside them, such as AYC, (S-AYV for some), ACD and all that jazz.

90% of drivers use the OEM mitsu stuff (diaqueen) which works fine. I've personally seen a guy putting in Penzoil (can't remember which one) in his tc, drove out and his car came back the next day on a truck with a broken tc.

You can use most things in your gearbox, but for the tc and rear diff I would not recommend anything else.

 

You can't ever dismiss my own experiences. I use to take the Evo 8 MR to the track often(I still do) but I was missing third gear all the time, once in a while same issue with second gear and the problem went away with Syncromesh.


My Evo 9 shifting was notchy from day one, I decided to change the tranny fluid to Syncromesh as well and it fix the problem, shifting is very smooth now.

I also took my Stealth to the track and ran 3 times, after the second pass my second gear was making grinding ALL the times. The problem persisted even at low speed and low rpms and it would stay like that in all traffic conditions, I was about to send the tranny for repairs in the near future. A friend of mine Trevor(10.9@133 Stealth) told me to put Red ine MTL 75-90 and I did. My shifting on the Stealth is smooth and the grinding noise is 100% gone. Sometimes a $20 investment on a good quality tranny fluid can save you thousands of dollars.

That was my very positive experience on Red Line MTL and Syncromesh. I currently have 3 bootles of Royal purple on my garage as we speak, I was going to try the Royal purple on either of the cars just in case any of them failed but so far so good, it looks like at least Red Line MTL or Syncromesh will fix most of your shifting issues.

My tranny tested .2c

Carlos

 

I agree I changed all my fluids over to motul %100 difference

 

royal purple here

 

I did 30,000 miles with MT90 in my 03 trans and it worked great. I did 30,000 miles with Royal Purple Max Gear 90 in my 03 T/C. And 20,000 miles with Max Gear 90 in my 05 T/C. It meets mitsu specs for T/C fluid exactly. The problem is Max Gear 90 is only available in 5 gallon buckets.

 

one question.. Drain all Tranny oil.. and Fill up with GM Syro... or One Bottle GM and Mitsu Tanny oils?

 

transfer case and rear diff: Diaqueen

tranny:

I've used Pennzoil Syn for the first 15k-30k. I will say you do have to change it frequently...like every 5-7k. I've been using Royal Purple now for 15k (haven't changed it once) miles and it is the closest thing that I've used that IMO comes close to the factory tranny fluid (which I can't purchase) in both shifting and durability.

I've heard and read that BG is great, and is changed roughly every 10k.

But to answer your questions, Royal Purple is what I'm using and will be using again the next time I change the tranny fluid.

 

are you using the Royal Purple Synchromax or the max gear 75w90 in the tranny? It seems some people like the RP in the tranny, and some don't, maybe they are using the wrong kind.

 

Amsoil 75w90 in the transmission, Diaqueen in the diff and transfer case.

No problems here . . .

 

Same combo in my car and it has held up well.

-Paul

 

I use the same combo as well. I just switched from BG-2 to Amsoil for the trans. There is a noticeable smoothness in shifting.

 

i switched from stock fluids to redline in my trans and t/c in my 03 8,3 months later my t/c started to whine real bad,replaced under warranty,2 months after that my trans started going(grinding 4th gear),replaced under warranty also.went to BG syncroshift and diaqueen in t/c and diff. never a problem after that. BTW the same thing happened to two other people i know with evo,s.I use BG in my trans.diaqueen in my t/c and diff. in my IX and all is well,will never use any other combo.

 

I hear good things about Penzoil, GM, and BG synchromesh, As well as redline (which is what I'm using.) Redline reduced the grind I had in 2nd gear to almost nothing. Still get some in 5th gear in high rpms. I'll be switching to PZ synchromesh next. Reason being, PZ you can find in your local store. You usually have to order BG synchroshift.