Just a clarification on the usage of which oil> I neglected the word 'difference' re: cost. The local jobbers like Superlube order that in bulk as oppose to a dealer, so the cost difference is quite a bit. Thanks.
You will be fine running a 5w-40 instead of a 0w-40. Most 5w-40's out today are of excellent quality and will suit your car more than needed. AMSOIL does have a 5w-40 that has been showing excellent analysis results in recent times. https://www.amsoil.com/StoreFront/afl.aspx?zo=1132530
5-30 Mobil 1 I Called Srt Guys They Said Thats Ok In Ca.0-40 Is To Hard To Find Out Here Only The Dealer Carries It With By 25% Discount There It Still Cost 6.95 Qt And At Costco I Get 5-30 At 4.95 Qt.