75w140 Axle Fluid...

[ktosv]

I was wondering if anyone has thoughts on 75W140 axle fluid? I am planning to change the fluid in my rear differential. I know the manual calls for 75W90, but when I went to buy some Mobil 1 I saw they carry 75W140 and on the bottle it says "Light Truck/SUV". I tow about 10-15% of the time and wasn't sure if the 75W140 would be better or if the 75W140 is more for the 3/4 and 1 ton trucks. Anyt thoughts would be appreciated.

 

Thanks

[RyanbabZ71]

I would use what is required, 75W-90. That should be sufficient even for towing, it is synthetic.