Originally Posted By: OVERKILL
Originally Posted By: GM4LIFE
Originally Posted By: wemay
Originally Posted By: GM4LIFE
Just fine. The 0W20 oil is super thin. Just like water. GM admonishes against running thicker oil in their DI truck engines. The oil passages are very narrow and the 0W20 oil is thin enough to flow through properly.
Where can this information be found? The Owners Manual? This is the first time i hear of only one oil viscosity being accepted. Just curious is all.
Yes, the owner's manual is where this info can be found. Historically as far back as the late 80's and early 90's GM has not run any oil thicker than 5W30 due to failures from running thicker oils during R&D testing. GM has stated that it's new DI truck engines have narrow oil passages and the thinner 0W20 oil flows easier through narrow passages and so for that, it is the only approved viscosity for that application. I will try to dig up the section of the owner's manual that states this. My owner's manual (Cadillac CTS-V) states never to run any oil thicker than 5W30 and for cold climates a 0W30 oil is acceptable.
That doesn't sound right. GM runs 0w-40 in their own track program Corvettes....
Yeah, Mobil 1 on both the UK and German sites recommend 0W-40 for my 1.8L (GM) Ecotec). The U.S. Saturn manual says to use only 5W-30 and 0W-30 meeting the GM6094 spec...
Originally Posted By: GM4LIFE
Originally Posted By: wemay
Originally Posted By: GM4LIFE
Just fine. The 0W20 oil is super thin. Just like water. GM admonishes against running thicker oil in their DI truck engines. The oil passages are very narrow and the 0W20 oil is thin enough to flow through properly.
Where can this information be found? The Owners Manual? This is the first time i hear of only one oil viscosity being accepted. Just curious is all.
Yes, the owner's manual is where this info can be found. Historically as far back as the late 80's and early 90's GM has not run any oil thicker than 5W30 due to failures from running thicker oils during R&D testing. GM has stated that it's new DI truck engines have narrow oil passages and the thinner 0W20 oil flows easier through narrow passages and so for that, it is the only approved viscosity for that application. I will try to dig up the section of the owner's manual that states this. My owner's manual (Cadillac CTS-V) states never to run any oil thicker than 5W30 and for cold climates a 0W30 oil is acceptable.
That doesn't sound right. GM runs 0w-40 in their own track program Corvettes....
Yeah, Mobil 1 on both the UK and German sites recommend 0W-40 for my 1.8L (GM) Ecotec). The U.S. Saturn manual says to use only 5W-30 and 0W-30 meeting the GM6094 spec...