I just returned from a local car show in my 1948 Chevy 3100. While I was there, I received a 20 minute plus talk from an elderly gentleman, that retired from an engine oil manufacture I guess, that I should be using an oil with higher zync content or I would tear up my 216. I am the first to admit that I am no engine expert on these type of engines and what they require. I am sure everybody has an opinion on the subject but I would like to hear some advice please.
