I guess I've been reading too much and now I'm just confused as to what oil to use. I have A VW turbo 1.8 4 cylinder. The computer has been modded so that the turbo runs more boost than stock. I know turbo motors get pretty hot and I need to use a good high quality oil. I have been using 5-30 Mobil 1, but now I'm not too sure that is still the way to go. Thoughts anyone???