Don't have any 5w-20 floating around, so I just snagged a jug of Castrol Magnatec for $15 on Amazon. Is this a good choice of oil for this engine? Currently this vehicle is running Chevron Supreme (LOL, thanks quick-lube place, for putting conventional in a turbo car, even though I know that oil is technically a syn blend). Is Magnatec a good choice, and will it perform OK in this engine? Do I have to worry about LSPI? Plan to do 5k mile OCIs. Any other good oils for this application that I can get for cheap? I'd prefer to avoid Mobil1 or Pennzoil, I don't like those.
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