Ricko1966
Full Access Member
- Joined
- Apr 11, 2017
- Posts
- 6,708
- Reaction score
- 11,485
- Location
- kansas
- First Name
- Rick
- Truck Year
- 1975
- Truck Model
- c20
- Engine Size
- 350
Shell live documents 8/15/2023 shell says good for off road gas engines. They did change some of the ratings due to the high dzzp and catalytic converters,but IDK maybe something has changed in a year and a half.The Rotella T4, while it does have the higher zddp levels, also has more detergents in it that are meant for use in a diesel engine. Those detergents can actually increase wear in a flat tappet gas engine. This is something that I just recently learned.