GL-4 ??

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I did a search and nothing came up.

Where can I buy GL4 OTC? I am in San Diego and just hit 10K on my first new car and want to change the MT oil as soon as possible.

Even though GL5 is listed as an option in my manual, its contents are corrosive to the "yellow metals" in the tranny.

Cheers!
 
Older GL5 can be corrosive but the newer stuff is not. I tried GL5 in my tranny (dual spec as is yours) and didn't like the performance (notchy shifting).

I haven't looked in Advance or Auto Zone but I suspect that they would have some there. The Redline MT90 is good, as is the Amsoil MTG but those are mail order. Motul makes a good one as well.
 
I have some buddies with the same car as I and they reported notchy shifting and bad cold weather performance (grinding even when rev matching) with the GL5. The syn blends make it even worse.

I have looked at Pep Boys, Autozone, Worldwide Auto Parts, Kragen, NAPA, even the dealership (they only ofer GL5
dunno.gif
) with no luck.

If I find it, do you think I should stock up? Is it going the way of the dinosaur?

Below is a copy of the response I got back from Scion/Toyota:
------------------------------------------------------------
From: Scion [[email protected]]
Sent: Friday, November 17, 2006 1:23 PM
To: Xxxx Xxxx
Subject: Manual Transaxle Oil Type API GL-4 [Incident: 061117-000158]
Recently you contacted Scion Customer Experience. Below is a summary of your contact message and our response.


Subject
Manual Transaxle Oil Type API GL-4

Discussion Thread
Response (Israel G) 11/17/2006 01:22 PM
Thank you for contacting Scion.




I apologize about the late response. I spoke with our tech dept regarding your situation. They recommend the GL-4 only because in the long run it will be less corrosive to the metal inside the transmission and it will allow for better mechanical output.





Please feel free to contact us should you have any further questions or comments. We would be happy to assist you. You may contact us directly at 1-866-70-SCION or by email at Contact Us.




Thank you for your interest in Scion.




Scion Customer Experience
-----------------------------------------------------------
 
With Specialty Formulations moving and unavailable for now, your best options are Amsoil MTG or Redline MT-90(both GL-4), if your manual is specifying 75W-90. Both of these products are popular and easy to find.
 
heathen, GL4 specifies a type of additive package. Does the requirement say anything about the weight of the fluid?

You seem to be assuming a 90 weight gear oil.
 
There are a bunch of GL4 and GL5 gear oils that can be used.
I include GL5 because some are blended without LSD additives are others claim compatibility(dual rated). Usually this means that they either use a buffered additive or other more friendly additive package.

I tried digging up spec sheets on all the common names. If you can find a spec sheet for other brands, post the link.

Some of the more common names can be ordered at your auto parts store, found by using the oil distributor section of the yellow pages, or found at the local quick lube. The boutique oils can be found online, and at specialty places like euro, bike, marine, 4x4, speed or industrial supply shops.
I try to include all 90wts whether 70w, 75w, 80w, 85w or SAE90. Basically pick your oil accordingly to your weather, requirements, and budget. http://www.lubrizol.com/AutomotiveGearOil/j306_spec.asp
In no specific order:
http://www.docs.citgo.com/msds_pi/465131.pdf
http://www.amsoil.com/StoreFront/mtg.aspx
http://www.amsoil.com/StoreFront/agm.aspx
http://www.redlineoil.com/pdf/6.pdf
http://www.pzlqs.com/Tech/Pdsheet/Domest...AE80W90GL-4.PDF
http://www.pzlqs.com/Tech/Pdsheet/Domest...AE75W90GL-4.PDF
http://www.motorspot.com/itm_img/Gear_300_Auto_3178_(GB).pdf
http://www.neosyntheticoil.com/75w90hd.htm
http://www.renewablelube.com/products/pdf/Bio-80W90 Gear Oil.pdf
http://www.royalpurple.com/prodsa/mgeara.html
http://www.crcindustries.com/faxdocs/label/lbSL24229.pdf
http://www.noco.com/NOCO-MSDS/NOCO_GOGLX_75W90_GL4.htm
http://www.specialtyformulations.com/MTL-R.htm
http://www.torcousa.com/technology/060912112431SGO.pdf
http://www.amref.com/Private_Label_PB_Templates/7729-G04.PDF
http://www.torcousa.com/technology/060908114113MTF.pdf
http://www.maximausa.com/products/gearlubes/synthgearlube.asp
http://www.motorspot.com/itm_img/Motylgear_75W-90_Auto_3170_(GB).pdf
http://www.silkoleneshop.com/products/oil/gear/15250105.html
http://www.idemitsu-usa.com/page_251.htm
http://www.aerospacelubricants.com/files/sheets/progear type 3 tds.pdf

Lubro Moly Voll-Synthese Gear Oil
Castrol Syntrax
Synlube MT
Coastal

Don't forget that you can find GL4 OEM gear oil at several dealers. You'll just need to know the OEM PN.
 
Also on occasion seen it available in the boating section for outboards. mostly 80W-90.

But I always ordered MTL for $8 a quart vs. $20+ a quart from GM.
 
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