GL-5 in my 6MT
10-12-2010, 11:56 AM
#1
GL-5 in my 6MT
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?
10-12-2010, 12:04 PM
#2
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?
no
B
10-12-2010, 03:23 PM
#6
Senior Member
Join Date: Dec 2002
Location: London, ON, Canada
Posts: 595
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.
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.
10-12-2010, 08:55 PM
#7
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.
10-13-2010, 06:50 AM
#8
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.
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.
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!!
10-13-2010, 07:09 AM
#9
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
10-13-2010, 08:47 AM
#12
10-13-2010, 08:55 AM
#13
10-13-2010, 10:06 AM
#15
Senior Member
Join Date: Jun 2001
Location: Colorado Springs
Posts: 497
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.
10-13-2010, 10:50 AM
#17
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
10-13-2010, 12:41 PM
#18
Senior Member
Join Date: Jun 2001
Location: Colorado Springs
Posts: 497
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.
10-13-2010, 01:37 PM
#19
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?
10-13-2010, 04:49 PM
#21
Senior Member
Join Date: Dec 2002
Location: London, ON, Canada
Posts: 595
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?
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.
10-13-2010, 05:09 PM
#22
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
10-13-2010, 05:35 PM
#23
Senior Member
Join Date: Dec 2002
Location: London, ON, Canada
Posts: 595
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
Also, sensor?
10-13-2010, 05:45 PM
#24
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?
10-13-2010, 06:17 PM
#25
10-13-2010, 06:54 PM
#26
Senior Member
Join Date: Dec 2002
Location: London, ON, Canada
Posts: 595
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.
10-13-2010, 07:14 PM
#27
10-13-2010, 08:32 PM
#28
Senior Member
Join Date: Dec 2002
Location: London, ON, Canada
Posts: 595
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.
10-14-2010, 06:02 AM
#29
Supporting Maxima.org Member
iTrader: (5)
Join Date: Jul 2007
Location: North Shore, MA
Posts: 1,795
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.
10-14-2010, 06:13 AM
#30
Imagine that!
gr
10-14-2010, 05:20 PM
#31
10-14-2010, 06:12 PM
#32
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?
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?
10-14-2010, 08:11 PM
#33
Senior Member
Join Date: Jun 2001
Location: Colorado Springs
Posts: 497
10-14-2010, 10:29 PM
#35
Senior Member
Join Date: Jun 2001
Location: Colorado Springs
Posts: 497
10-15-2010, 01:56 AM
#36
Read what's written on the bottle...that where I bought mine.
Last edited by Augustus Maximus; 10-15-2010 at 01:58 AM.
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