I'm looking for a 15w40 oil for my car to run next summer, but I'm not sure which of these two will be better for my 01 TDI. I'm thinking that since the 506.01 oil standard is at 0w30, the lighter of the two (redline) would be the better choice. However, I'm not aware of the additive package differences. Does anyone know which one might be best for summer protection and mpg?
--Matt
--Matt