my hopped up 01 jetta 1.8T bought new went 200,000 before trading, 10-30 Amsoil early on then mostly Redline 10-30, 10 thou intervals mostly highway, still 20 on the boost vac gauge i installed. a good car with a great engine!!! gotta love the fully galvanized sheet metal as well, NO rust in 10 years in the salt belt!!!!