Quote:
Originally Posted by cvicky
some say youneed to add oil with zink in 50-60s' engines others say no
so far ive been getting away with bargain brand multy grade 10w30
am I looking for trouble
|
You're doing great. There is enough zinc in the oii you're using. One requirement for oil to meet new standards is that it be backward compatible to meet previous standards. So no need to worry unless you have a high zoot race engine with aftermarket extreme pressure valve springs.