John, I dunno about that special oil filter for your 16v, you could try giving partsshop a call. Mauer's is expensive but by all accounts an excellent vintage shop. There are other places around there which will do an oil change, but I don't know how much they charge. European Import Auto or something in Hopkins/St. Louis Park and then there's another place in Golden Valley near Menard's. I live in Plymouth so it's not too far from you. You sure Mobil 1 0W-40 is the one you're seeing at Target? I gotta go check it out myself. Maybe I'm losing my mind Email me.
Kuan