I'm working on a Studebaker pickup, resurrecting it from a very long 20+ year sleep. Finally got it running and it runs even and smooth, but it seems the oil rings are stuck from prolonged sleep, as it is a big-time smoker. Runs very sweet on all 8 cylinders, just smokes like a professional mosquito fogger. Judging from the spark plugs that came out, it was not a smoker when parked. What snake-oil or home-brew suggestions you guys have? At this rate I don't have much to loose trying, before a tear down. I know back in the day there used to be products like "Mcmillian Ring-Free" or "Risolone" - anything like these products today still around?