I recently pulled my motor to do some work then put everything back together and went to buy all the fluids to fill them back up. I was looking for GL-4 everywhere and NOBODY had it so I just got GL-5 now I'm reading that it's bad for our trannys so my question is will I be ok to drive with GL-5 for 3-4 days until I can get some red line MT-90?

 

Here

no

B

 

And will I need to clean out all of the GL-5 or will just draining be sufficient?

 

^^ i would get mt 90 and put it in and run it for lik 2 days...then drain it gain and refill it with fresh mt 90 again to get all the gl 5 out =)

 

AMSOIL

 

Is the specific product called MTG?
I am considering trying it.

I have access to a Pennzoil synthetic GL-4 fluid but it's just as expensive as Amsoil, so I figured I'd hold off.

I am currently running MT-90 but have yet to try anything else and I am looking for other options. I plan on keeping the MT-90 just incase.

 

it all depends on who makes the gl-5. There are a few backward compatible ones. I think royal purple is ok and a few others like Motul. As long as they don't use a lot of sulfur. Mobil 1 gl-5 synthetic is a no no for sure.

 

I am not sure what people call it out there. It looks like this.



I had a 3rd gear crunch in my old open diff. I drained and filled with this and it cured about 90% of it. Stuff works great!!

 

Pretty sure I started-off with the non-gl-4 Amosil lube, whatever it was back then.

Switched to the Amosil Gl-4 when they finally released it, and although i couldn't PERCEIVE much of a difference, I sure FELT better about it.
Good stuff that AMSOIL. Good shifting consistently summer and winter....minus the crunch, which has been there FOREVER!

I didn't FLUSH mine - only drained it.
I challenge anyone to provide some EMPIRICAL EVIDENCE that supports a conclusion that not flushing the gl-5 will be detrimental in the long-run.

gr

 

i use Motul, cost $11 a quart.

 

+1 for Motul 75w80

 

I wanted to get this but every site I found that sold it had it back ordered for weeks. I like the mt-90. Feels smoother than the 8 year old stuff that was in there when I bought it

B

 

i have hook ups on the **** so im all good.

 

I'm gonna try me some of that Amsoil.
I run it in my Saturn 5MT (Amsoil ATF) and it's fantastic.

 

Back when I had my 3rd gen, I ran Mobil 1 GL5 in it for at least 60k miles. I never had even so much as a slight shifting problem. I miss how smooth that tranny was compared to the 6 speed. Of course back then I didn't know that GL5 "ate" brass synchros either. Even though I got lucky and got away with it, I'd definitely recommend going with GL4. There's no reason not too.

 

Why would you want hook ups on ****?


I've got **** all day long

 

Mobil 1 GL-5 IS what I used, I found a place in town selling Red Line MT-90 and got it switched out last night. Is it really necessary to drain the oil in a couple of days and refill again like mentioned above? This stuff isn't cheap

 

If you think the Red Line's expensive you don't want to know how much a new tranny will cost! Seriously you're talking about what..$30 maybe in oil? I personally wouldn't risk it for that much. Get it changed as soon as you can and never worry about it again.

 

Sorry I didn't make myself clear, I already did drain the GL-5 and put in Red Line MT-90 GL-4 last night after I found out how bad GL-5 is on our trannys but it was mentioned in one of the previous posts above that I should run the MT-90 for 2 days then drain it and add more so I'm asking Is that really necessary?

 

This post is what I am referring to

 

I would not.
There is little residual fluid in an MT gearbox after a drain, especially if you tilt the car towards the direction of the drain plug.

 

its not that hard to change it out yourself..... just unplug the sensor on the buttom of the tranny and let it drain into a pan the use a funnel and dump 5 quarts in there. if you had taken your time, your initial $60 in oil woulda done, but now you have to spend $180 instead. paitence pays

 

FYI, the 6MT only takes 2.5 quarts roughly.

Also, sensor?

 

Go to your local GM dealer...they have GL4 synthetic lube you can buy. I did just that dude.

 

for some reason i misread this as 5MT. Yes the 6spd takes 2.5, you guys are lucky, 5MT takes just shy of 5 quarts. I was refering to the speed sensor or even neutral switch to drain all the oil.

 

No drain plug on the 5MT?

The fluid change couldn't be easier on the 6MT, just a drain plug, I think its 1/2" drive square, and same as the fill plug.

 

No -it's metric HEX, but can't remember what size....10mm i'm GUESSING.
I'd have to go look at the socket I bought.

gr

 

Oh yeah I remember now... I remember having to buy it because I'd never needed it before for anything else. Something else on one of my cars is a 1/2" drive square, which is really convenient.

 

a bit random, but on my '99 5MT the drain plug was a flat head screw type. There was no way of getting it out what so ever......so i think i ran the same fluid for about 150k.

 

Heh -- I discovered the trans. oil drain on my hyrdro-drive lawn tractor (cub cadet) was a 1/2" plug earlier this year.

Imagine that!

gr

 

Checked while i was under the car today -- 10MM HEX it Was!!

gr

 

I looked at sites selling Amsoil gear lube as well as Motul and Redline.
I could not tell if any were GL-5 or GL-4. Looks like the Amsoil works in Gl-5 applications, so is that unacceptable in the 6mt?

 

Here's what I found. It says GL-4 on it.

http://www.amsoil.com/storefront/mtg.aspx

 

I ended up ordering the Redline MT90 off of Amazon.com

 

This is what I've been using for 40k miles now. I'm planning on changing it pretty soon. I think this time I'll try the Amsoil though just for the heck of it.

 

http://www.amsoil.com/storefront/mtg.aspx

Read what's written on the bottle...that where I bought mine.

 

Amsoil makes something for freakin' everything.



I run this in my Toro lawnmower!