Posted by KevinW on April 17, 03 at 13:49:49:
In Reply to: Which Gear Oil posted by Charles Scolastico on April 17, 03 at 09:35:52:
I use Amsoil 75W-90, Series 2000 in my 2003, K2500, 8.1, 3.73. I used it in my '99 K2500 before this one. Tow 7000 lb travel trailer. I know several others on this board recommend it too. Easily ordered online. About $8.75 / quart. Meets GM specs.
KevinW