Re: Engine oil for 572 BB
I'd agree with following the builder's guidelines, at least as pertains to the weight. If you want to run a full synthetic, I'd run a conventional hydrocarbon oil for the first 3000 miles or so to break it in, then switch. I read a bit to quick, do you have a roller motor, if so I don't think that the zinc content is a big concern, but if flat tappet, zinc content is very important. If you're not concerned about the zinc I swear by Mobil 1 and have used it for years in my daily drivers. Goes to say using a top quality name brand filter is a must, skip the house brand X filter.