I have been using Brand Penn 10W30 (now called Penn Grade One) for 7 or 8 years now. Real Pennsylvania crude oil base, clings to the parts, especially the rockers over the winter, has a zinc package and a wear package compatible with our old motors, and seems to hold better pressure then the Pennzoil I use to use, at least from what I have experienced.
Last edited by Dragsix; 02/17/2020 9:47 PM.
