I’ve never done anything like you are trying to do but just a thought as oil gets expensive very quick. What if you would drain your oil after running it for awhile and run it through a paint filter so you could use the same oil to flush it again. Filters are cheap especially if the napa sale is still going on. I think the 1515 napa Gold was around 3.00 each. Be careful with the kerosene as my buddy spun a bearing using to much. You are in uncharted water for me but just throwing some ideas out there.
