>In addition to Mike P.'s comments, the reason why 5w30 is not recommended >in >hot weather is the following. The 5w30 uses a 5w base stock and in order >to >get to the 30w hot viscocity, they need a LOT of viscocity additives. Ok, D^2 you don't like viscosity additives, I can understand that, but since the 5 is when cold and the 30 when hot why shouldn't they act the same in hot weather? Obviously that is ignoring any problem with the viscosity additives. I was told 5w30 was recommended for my 2.2, but the book says no so I'm sticking with 10-30, 10-40. I was going to put that 0W30 in my'cuda that sits a lot, but I figure with all the leaking it isn't worth it. Thanks everybody, Rob _________________________________________________________________ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx