>>Tranny Fluid Info and Experimenting Thread<< (Amsoil, Redline, USC, etc.)

[xmikex]

i know but i have read the pages and keep hering different fluid being mentioned im guessing either go with shockproof or redline... any pecial numbers on those brands?

[06wrx4me]

i know but i have read the pages and keep hering different fluid being mentioned im guessing either go with shockproof or redline... any pecial numbers on those brands?

http://www.clubwrx.net/forums/2192837-post47.html

Either that ^^^ for a mixture, or The Subaru Extra S fluid is very popular for a straight fluid.

[xmikex]

ok im really confused ive been looking throuugh the posts abnd keep seeing people talking about mixing oils and stuff can i jsut put in redline lightweight shockproof tranny fuid in and call it good? or is there a better fluid to put in without mixing? or is mixing the best way to go?

[Big Sky WRX]

I had very good luck w/ straight lw shockproof

[xmikex]

thanks all ways helpful. on there website it says this...

A unique gear oil designed to lubricate racing transmissions and transaxles which see serious loads (not recommended for most syncro-type transmissions). It has excellent low-temperature flow which allows easier shifting when cold. May be used to obtain maximum power transfer in racing differentials which do not see high temperatures. Similar to a 75W140 gear oil, but with the lower internal friction of an SAE 30 motor oil.

it mentions cold temperatures, i am in southern california and it always hot around here will this effect my car in a negative way? and this is probably a really REALLY dumb question but redline is ok for a subi syncro transmission?

also im new at trannies and all this but is gear oil and tranny oil the same thing?
and the differential and the tranny take different fluids rights?

[Big Sky WRX]

I switched to the Redline Shockproof (LW) when I was in Portland on vacation some years ago and my tranny was having difficulty shifting. Long drive from Montana and temps were in the 100's. I had a track day (PIR) in a couple of days and knew I wouldn't be real happy w/ the way the car was shifting. I swapped in the Shockproof and all was good (it was still in the 100's during the track day) so I think it will handle the heat just fine.

gear oil and tranny oil are used interchangeably.

the rear diff also takes a 75w90, but it's not fussy like the tranny- any 75w90 should be fine

afaik the shockroof is fine w/ synchros

[xmikex]

ok thanks for all the help looks like ill be swapping my tranny fluid with some redline shockproof lightweight!! hopefully make some difference

[RedWRXwagoN]

ok, since i dont have time to read through hours of pages of guys going back and fourth on tranny fluid, i was wondering if an experienced wrx user can give me some advice on whats worked for them....i have a 2004 wrx wagon thats stock....all im looking for is something that will help my car last the most amount of miles and take away the grinding feeling i get in the lower gears....dont care about cost and would prefer not to have to mix more than two things....any suggestions?

[SD_GR]

I'd suggest that if there were a single answer then all those pages you hesitate to read would probably not exist. If your existing fluid works for you keep using it. Otherwise look at the sticky thread for other options. There is no one universally liked solution except maybe the Subaru Extra-S stuff but I've not tried that.

[RedWRXwagoN]

Yes, you make a good point....but, im looking for advice from somebody who has an earlier year WRX who doesnt use stock fluid, has high miles, and doesnt get that grinding feeling in the lower gears.

[wrx wagone]

Yes, you make a good point....but, im looking for advice from somebody who has an earlier year WRX who doesnt use stock fluid, has high miles, and doesnt get that grinding feeling in the lower gears.

You very well could actually read through the pages from the last thread instead of creating a new four pages in this thread, or just use a quality GL-5 fluid.

[DUB]

Seriously, it's only 172 posts. It shouldn't take you more than 20 mins to read.

>>Tranny Fluid Info and Experimenting Thread<< (Amsoil, Redline, USC, etc.)

What you don't seem to understand is that if one person gives you a suggestion, five more are going to chime in with a comment. Then ten more are going to chime in with there .02. Eventually you have yourself another 5 page thread with no clear answer or advice, when you could have just read through this one from the beginning.

>>Tranny Fluid Info and Experimenting Thread<< (Amsoil, Redline, USC, etc.)

[06wrx4me]

ninja merge!

You essentially have 5 choices BTW.

USC, any GL5, Subaru Extra S, Redline LW shockproof, or "other mix."

Personally I don't like the Syncromesh fluid in the USC and my Blackstone data seems to support that. I am running a Amsoil/LW shockproof blend right now and I'm happy with it.

[DUB]

ninja merge!

nice.

[Scooby-Dee]

Here's my input:

I ran straight Castrol Syntec Synthetic Gear oil 75w-90 for 1 year without any issues whatsoever. I just replaced it with Royal Purple Max Gear 75W-90 and the tranny seems to shifting just like normal. Why am I changing? I could the parts store was out of Castrol 75W-90 and I need to get my car back on teh road so I can pass the bi-annual inspection.

Do I beat the crap outta this car? No!! I have done some spirited runs on a mountain pass but this car is driven NORMAL for the most part. The gutted Honda is for bashing!!

Oh yeah, I drive a '01 Bugeye STi.