What is everybody using for engine oil in their 216s? The manual calls for straight 20w but I'm wondering what modern oil is best. I know I have to add zinc. Pictures are truck as found after 50 years in barn and then back on its feet with new brakes, fuel system, and tires. Radiator is re-cored and it has new hoses and belt. Lots left to do but at least it's finally running.
