Quote Originally Posted by Adm_rsx View Post
I have a supercharged car. The guy tuning my car knows allot more about this stuff then I do. He recommended me use it. I know nothing as of why. But he said if I start to consume the oil then i should run the 0w50


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I have never heard of a boosted k20 motor running anything less than Xw30. Xw20 is too low, even for a supercharger. You should be at least running 5W30. Regardless of your setup, your oil viscosity rating should NOT be less than your motor when stock. Bad for your motor man.