good tranny oil

[Sil-Abc]

i heard that im supposed to use gl4 inside a SR tranny cuz it corrodes the syncros so i was wondering wats a good brand and place to get gl4 oils? I checked at a few autozones and they were all gl5... ive been hearing all these different stories about gl5 being better and an upgrade of gl4 but then i hear that its bad for our trannies... so whats the deal.... can i run gl5? is it safe to run it? if not, which gl4 brand would u recommend for hard shifting and track use? thanks for the help.

[The Hamsterball]

:repost:

If you searched, you would have found a ****load of results on this.
It's been covered over and over (hell, i even was searching for this months ago when i wanted to change my MT fluid).

A simple advanced search of "tranny fluid" yielded 20 results.
"transmission fluid" got me 8 results.

at least 25% of those threads include posts on MT fluid recommendations.



..

Anyways.. You would be best off using Redline transmission fluid.

I went with Redline MT90 (which is 75W-90 GL4) for my transmission. But, I live in CA where it never goes below 50 degrees, and somebody told me that it's okay to use this thickness for my climate.

Well, you're in SF, so I guess it would be okay to use that viscousity. (although I don't know much about viscousity)

I haven't had any problems with this gear oil, but I do have to say, you will notice that it feeels way better in warmer weather than in cold mornings.
I notice a difference.


That's just minor though, the stuff works great. It's better than the stock 80W90 Penzoil nissan uses.

[Twinkie]

or penzoil synchromesh...yes...search button is the key

[Sil-Abc]

well i searched on the gl4 and gl5 before i posted and they didnt answer my question. is it alright to run gl5 and what makes gl5 different than gl4?

[Ritz S14]

http://www.zilvia.net/f/showthread.php?t=60620

[WILDACEX187]

gl5 will eat the synchros in our trannies. make sure u only put gl4 in there.

[nightwalker]

synchromesh

[HaLo]

GL5 will only eat the synchros it water is mixed to it...

Now, since a tranny is supposed to be somewhat sealed, water should not be found in there... And hence, GL5 will be okay.

I spoke with a Motul representative and he garanteed me that his GL5 will not eat up my SR synchros... So I got Motul Gear 75w90...

[Sil-Abc]

thanks halo that message made me feel more at ease :D

[Ritz S14]

Yeah, when I drained my shockproof fluid, it was as red as the day I put it in. No grinds chips, or metal flakes. Just rather not used something that heavy when it's not required.

[HaLo]

Actually, the full chemical reaction is:

Sulfur (found in GL5 oils) + Water + Brass = bad

But you need all 3 elements. If you don't have the water, then, you're ok.

GL5 is just a new standard in lubrication, exceding GL4 standards.

[nistech]

what is turkish turbo terror.

[kazuo]

what is turkish turbo terror.

Halo is a Turk, drives a Turbocharged car and is a terror.

I think.

[HaLo]

what is turkish turbo terror.

That is a very useful post. Ask MrMephistopheles.

[nistech]

Halo is a Turk, drives a Turbocharged car and is a terror.

I think.

me too does that make me a turkish turbo terror also :tweak:
....outstanding

[HaLo]

No, it's a special title assigned by MrMephistopheles. ;)

[TheSnail]

I use Redline ShockProof Ultralight, the tranny is staying together so it must be working. You should be able to find it or order it at a speedshop for 13-15$ a qrt.

Three diff types of shockproof.

-heavyduty
-lightweight
-ultra light