- Joined
- Mar 14, 2023
- Messages
- 208
I have a coworker who is picking up a new F150 with the 5.0 soon and I’ve been talking to him about the break-in procedure. I received advice from a tribologist to switch to Valvoline Max life synthetic blend 5w30 after he dumps the factory at 500 miles and run the blend for 1k miles before going full synthetic at 1500 miles. I was originally going to recommend M1 5w-40 at the 500 mile OCI. Thoughts?
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