Hello,
Read a fair few topics on edge 5w30 and edge 5w40, people saying 40 is better for track days for the higher temps. I never track my gti and it's only stage 1, and I don't drive it too hard and use it everyday. But 5w40 is half the price of the 5w30, is 40 really only more suitable for people who drive it harder to reach higher oil temps?