- Joined
- Dec 27, 2022
- Messages
- 31
M1 5w30 in ‘17 sierra ats
As learned elsewhere (here?), same engine prior to advent of AFM was spec’d 5w30, so at 150k mi see zero reason can’t put 5w30 or heavier in there. Oci 5kmi.
As learned elsewhere (here?), same engine prior to advent of AFM was spec’d 5w30, so at 150k mi see zero reason can’t put 5w30 or heavier in there. Oci 5kmi.
