I have a '70 Chevy Malibu with the original small block engine (85,000 original miles). Given the fact that the new SL oils are optimized for modern engines with emission controls, I need a recommendation on a good dino oil. The engine runs well for its age, but does use a bit of oil (approx. 1 qt per 800 miles). This useage is not an issue as the car it driven for pleasure only. I had been using Valvoline Maxlife, SJ formulation, but with the comments about the new SL formulation, I don't think it would be a good choice. Your comments are appreciated.