I usually used whatever Dad had in the shed I could steal when I was a kid. I've used, non-detergent, straight weights, used oil, or on special occasions I would help myself at a local station that would forgot to take their oil rack in that night!
Oil threads are usually funny. They rank right up there with belly pan and fork brace threads!
I just want information. Where does one find what the mixture of mineral and synthetic percentages are when you buy the blended oil? I don't think it is on the container. Has anyone made contact with an oil company or dealer for this info?
yes I have when I worked part time for auto zone people would ask that question so i called the major oil co,s they all were diff from 10 to 25 % syn to 75 reg oil. tests show you far ahead to add one qt of syn to three qts reg oil. if you want a semi syn oil or two to two your choice.