75w85 GL5???

[heffergm]

Is anyone aware of a commercially available synthetic 75w85 GL5? This is the oil spec'd for the diffential in my Lexus (aka Toyota).

If not, does anyone have any idea if Lexus/Toyota dealers make the standard 75/85 available to customers?

 

[1sttruck]

Use Mobil 1 75w90, and pretend that the stuff that you use will be on the low end of the '90' tolerance, and that it's a bit warmer than assumed by the engineers who spec'd your OEM oil, which was on the high end of the '85' tolerance in your vehicle.

 

[1sttruck]

"I have heard that there are better gear oils than Mobil 1"

There's always a better gear oil, it's just a matter of availability and cost. Around here Mobil 1 gear oil seems to be the best readily available oil at a reasonable, like $8 or $9 a qt at Schucks. It seems to be a better oil than the offerings from other major companies and the house brands. From what I've heard on discussions of Redline for longer change intervals I prefer Mobil 1.

 

[Pablo]

What year and model Lexus?

If we were talking manual transmission I would be a bit more worried about the 100°C viscosity. However since it's a diff I tend to agree with 1sttruck on the synthetic 85 vs. 90.

 

[Tones]

I thought Toyota specified 85W90? Anyway, I have heard that there are better gear oils than Mobil 1, no proof though. I put Redline 75W90 in my Tundra diffy with no problem. I have heard Amsoil is very good too. I have heard some say the dino with the additive works better for limited slip differentials, but for all other cases a 75W90 works fine.

 

[wantin150]

http://www.redlineoil.com/products_gearlubricants.asp?pvID=80&prodID=60&subcatID=20

Closest I could find.

 

[HardbodyLoyalist]

SF MTL-P is technically a transmission fluid, but it's 75W-85 and GL4/5 dual-rated.

Maybe Mola can chime in as to whether its suitable.

http://specialtyformulations.netfir...alog/product_info.php?cPath=21&products_id=32

 

[muddawgs]

you can buy the correct toyota bottled fluid from a good lexus dealer. a 75/90 gear lube maybe suitable also. mobil 1 75/90 is readily available and should work fine.