- Joined
- Mar 24, 2021
- Messages
- 6
I have a 30KW Kohler built gen with a Ford straight six industrial motor. What's best for these things? Propane make a difference? My service guy uses 5w30 NAPA dino oil. I'll do my own from here on out. Can get to just below zero where I am occasionally in the winter. I'm think a 5w-30 synthetic but would love to hear from the experts.