Bextreme04
Full Access Member
- Joined
- May 13, 2019
- Posts
- 4,439
- Reaction score
- 5,581
- Location
- Oregon
- First Name
- Eric
- Truck Year
- 1980
- Truck Model
- K25
- Engine Size
- 350-4bbl
I am still going through the initial break-in on my rebuild. I used the lucas 30w break-in oil for the initial 500 miles with a filter change after the initial cam break-in and driving procedure. Then I changed to the 10w-30 valvoline conventional. I'll run that for the first oil change interval(about 3-5,000 miles) and will then go to a 5w-30 Mobil 1 synthetic for the foreseeable future.