I was wondering what everyones opinion on Valvoline VR1 was here. I have a full roller built up 351 with a Holley 750 on it. The oil gets changed once a year at about 2000 miles per year, however some of those miles can be hard. She sees alot of burnouts and once in a while a shot of Nitrous at the track maybe twice a year. The engine builder said to use 10W30 so I was thinking about switching to VR1 Synthetic 10W30. I've already decided to run the Ford Racing oil filter thanks to some helpful feedback in the oil filter section here. It currently has Pennzoil Platinum 10W30. I was debating the VR1, Rotella 5W40 or the Mobil 15W50. When I got the car it had no PCV system only breathers. I have since put a PCV system back on it to help save the oil a little bit. There was also a bit of fine metal sludge on the magnetic drain plug thats in there so I want to make sure the oil that goes in this thing will protect it.