2000 Lexus GS 300 rear differential

[davidyan]

I have a 00 Lexus GS 300 that calls for GL5 straight 90 wt in the rear diff.

I can't find straight 90 weight anywhere. I do however have the AMSOIL 80w90 leftover for my other car. Does anyone see a problem using this, specifically in higher temperatures? thanks

 

[unDummy]

No problem

 

[aquariuscsm]

That`s what I use. EXCELLENT stuff!

 

[PT1]

No issue I have used it in 2 Lexus diffs

 

[artificialist]

It is always okay to use 80w90 GL5 in a differential that states to use SAE90 GL5 oil.

I am forced to do so anytime I do repairs to a Toyota rear end, and I never had a single problem.

 

[Ben99GT]

Get a full synthetic 75W-90, Amsoil, Redline, Schaeffer's, etc.

 

[JohnBrowning]

I prefer Redline their shock proof 75W250 is a great gear oil for diff.'s!!!After Redline I would prob. go with Amsoil 75W110 Sever GEar oil. You can easily go far longer on the products I mentioned then on anything dino based. I have not used AMsoil new gear oil but it is AMsoil and I have never known them to make a made product. The worst that one could ever say about the previous Amsoil gear oil is that it was not any better noticeably then say M1 synthetic gear oil. If you do not like synthetic then you really only have two choices Schaffers would be my first choice followed by Swepco. Schafers used to make a Black differential oil that was really good stuff. I think it was first intended for mining operations or some other heavy industry because it was just so very good!

A lot of race teams use off the shelf Redline shockproof gear oil and could not ask for more. In Californias climate it will be ideal in my opinion!

 

[JohnBrowning]

Oh I should add my Toyota manual from 1986 4Runner called for 70W90......Try finding 70W90???? Back in 1986 it was almost imposable. Their where companies that made it in that grade but no one stocked it because it was so much more expensive then 75W90 or 85W90!!! So when ever my Dad and I found some it did not matter if it was dino or synthetic we would buy all they had! When I bought the 4Runner from Dad I said the heck with it and just started useing M1 75W90 until I switched to 140 for a while then went to Redline almost exclusively. About the only time you see SAE90 gear oil is in bulk at places that work on heavy equipment you almost never see it in anything smaller then a 5 galon pal.

 

[davidyan]

Originally Posted By: artificialist
It is always okay to use 80w90 GL5 in a differential that states to use SAE90 GL5 oil.

I am forced to do so anytime I do repairs to a Toyota rear end, and I never had a single problem.


Thanks. The problem is the manual states that 80w90 is ok if its below freezing. Would it be ok for "regular" temperatures? It recommends straight 90 for above freezing.

 

[lexus114]

Originally Posted By: davidyan
Originally Posted By: artificialist
It is always okay to use 80w90 GL5 in a differential that states to use SAE90 GL5 oil.

I am forced to do so anytime I do repairs to a Toyota rear end, and I never had a single problem.


Thanks. The problem is the manual states that 80w90 is ok if its below freezing. Would it be ok for "regular" temperatures? It recommends straight 90 for above freezing.


But thats for conventional oil,not Synthetic.

 

[MaximaGuy]

Originally Posted By: davidyan
Originally Posted By: artificialist
It is always okay to use 80w90 GL5 in a differential that states to use SAE90 GL5 oil.

I am forced to do so anytime I do repairs to a Toyota rear end, and I never had a single problem.


Thanks. The problem is the manual states that 80w90 is ok if its below freezing. Would it be ok for "regular" temperatures? It recommends straight 90 for above freezing.


In Bay Area you will be fine with 75W110, I have been running this for sometime now on my Toyo SUV. The SVT Amsoil soup keeps the drivetrain quite as a kitten.