Thanks for sharing that. It definitely states differently in the 2021 manual. However, they do use the word “recommended”. If Shell Rotella T6 is what the dealers are using at oil changes, I feel fairly confident that if I were to have a warranty issue and state that’s the oil I’m using, it would be hard to deny that claim since that’s what my authorized dealer is using.
Honestly, it’s oil, it’s full synthetic, it’s for Diesel engines, it’s the right viscosity, how harmful is it really?
This is what my local dealers use, this is what my manual says, this is what I go with.
FTC doesn’t require me to do routine maintenance at a dealership or manufacturer, and it’s protected by law as long as I’m using what is in my owners manual.
If using anything but the specs provided in the 2021 manual were so detrimental to the engine that it was causing issues, I’m sure they would have made that fact very well known and clear to owners, almost like a recall notice.
Explains auto warranties and auto service contracts and their differences. Also describes extended warranty scams and your rights.
www.consumer.ftc.gov