Roughly 35 years ago, at the dawn of my driving career, I was given a '64 Corvair Monza 4dr, 110 bhp, Powerglide, required premium gas, from the family fleet. Since the Corvair both leaked (alot) and burned oil, regular additions were required. My father advised me never to use Quaker State, since it would cause problems. I pointed out that since Quaker State was API certified, and met all current specs (SC then, I think)it should be okay. Dad agreed, and the Corvair was fine. Did you know that you could wear out the rear tires on a Corvair in well under a thousand miles? I certainly wasn't smoking the tires with Powergilde. Maybe I was tail-out alot, and didn't even know it. I thank the Lord for GM's suspension development of the time.
Anyway, my point is that anyone who visits this site should know that there are no really bad oils out there. There may have been a time when PA crudes were refined and used for motor oil without dewaxing. That time is decades past. I have Pennzoil in one of my cars right now, and I'm confident that the oil is just fine.
