The Stovebolt Site Forums The Shop Area Engine Shop Modern Oil in a Classic Engine

Getting ready to fire up the 49 with a later model 235. I read the first 30 pages of topic titles and didn't see any that dealt with modern oils in classic engines. On a Lincoln Continental site that I also read there is a lot of discussion about what oils and additives to use. Anything in particular I should use or avoid? Should I drain the old oil first and refill or try to start and run for a while before dumping it to change? The last tags were 98 and maybe driven a little later but not very much.