wemay
Site Donor 2023
508.00 will hold up just as well if you believe PAO based oils do. The GTI isn't the highest hp model using 508.00 either, the Audi S4 does as well. All that being said, I've gone through the same questions in my mind since the EA888 has always used a 3.5 HTHS oil. It's hard to think a drop this far down in viscosity is reasonable. But we either trust VAG or don't on this. I haven't seen a bad 508 uoa either.