[mbar]

Originally Posted by evanescent03

I picked Castrol edge 5w40 off the list and went to buy some online and I did not see the licensed designation anywhere... It makes me question whether I am missing something or if the list is not accurate... I am fine with any of the oils that meets their criteria. I just want to make sure if something goes wrong they can't blame me for putting the wrong oil in it. Seems like that is a tricky enough process

Here's the challenge:
Dexos2 is described as: " Specifically designed to meet the needs of GM diesel engines" .
I have a feeling this is why we can't find the right oil.
You mentioned Castrol Edge - their diesel oil is certified Dexos2 - http://msdspds.castrol.com/bpglis/FusionPDS.nsf/Files/88FB7D0788A68F2580257E2D004F5207/$File/BPXE-9VX5VU.pdf

This is the only spec that I could find with Dexos2. Is it the right oil? I DO NOT KNOW