I think you are right about the 5W-20 and cafe requirements. i guess it is possible, but i don't see how that oil could give the durability of a 5W-30. i have a 2010 shelby gt500 and it calls for 5W-50 synthetic, yet has less compression and doesn't turn the rpms of the coyote engine. i'm hoping with an iron block and 5w-50 oil this engine will last a long, long time
Matt, i live in deerfield beach. Where does kevin mcdonald tune out of? Have 2012 gt/cs 6man 3.73 and just did 1st mod(airaid cai), have not bought sct yet, tryin to figure who to buy off of and who to tune? Any help appreciated!