i have been using the mobil delvac1 5w40 for years, it runs me about $120 per case of 16l but i've been happy with the test result in the tdi and 1.8T
recently i even ran petrocan duron 5w40 syn to see how it goes, need to do an oil sample and see how its been.
the last info i had for the delvac1 showed better additive package than the run of the mill mobil
don't know the current makeup, and as stated a filter is under $20.00, 9 l oil maybe $50.00 can't justify paying anyone $300+, sounds like i should trade in my engineering degree and start wrenching (again)
