I know this has to be a pretty common question, but I would like a little direction as to the proper oil to use on my 1976 Firebird T/A (weight / synthetic vs. conventional, etc). Every forum I’ve been on gives a different answer (almost every line of the thread) and most explanations seem to be “…I’ve been doing this way for year and never had a problem…” or when they do offer more specific information, the next poster says that it’s wrong. Please help!!
The engine is a '73 Pontiac 400 with a mild build (bored .40 over, street cam, aluminum RPM performer intake / carb, headers etc.) The car is garaged all the time and driven 1-3 times a week until around October, then it’s stored until the snow and sand is gone in the spring.
Thank you very much for your input!!