My oil does not get hot so I want a oil for start-up but my valve train is noisy and that is what REALLY want is something to quiet this ls7 down... redline is 12/qt. at summit and I live 2 munites from there. and my wally has 6 jugs of castrol 0w40 euro with ti in there dicount isle for 25/5qts.Car is a 2008 Corvette Z06 with 17k on it. and the heads have been adressed Thank-You VERY much for any replies.
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