Diesel Place : Chevrolet and GMC Diesel Truck Forums - View Single Post - L5P: Rotella T4 15W40
Thread: L5P: Rotella T4 15W40
View Single Post
Old 03-25-2020, 12:05 PM   #7 (permalink)
timweidner
Low Boost
 
Join Date: Mar 2019
Location: Solon, Ohio
Posts: 8

These guys -- 6.6L Duramax Engine Oil Change| Oil Selection Guide & Oil Change Procedures -- seem to be convinced that Amsoil heavy duty 15W-40 full synthetic is the only way to go, but maybe Amsoil is a paid sponsor of their site?

Anyone else have experience with Amsoil or any other full or partial synthetic oil?
Offline   Reply With Quote