Hello All,
I came into possession of a 1991 Passat Wagon. I have a quick question that hopefully somebody here can answer.
Does anybody know what fuel octane VW recommended back then for these cars? The fuel door sticker is long gone and I didn't get an owner's manual either (of course!) Right now it seems to be running on 87 and my machanic tells me that it has knock sensors and will run on anything
-- but I've read stories about messing up parts (the O2 sensors seem vulerable?) by running below recommended octane.
Should I be putting the good stuff (93) in this tired old baby or does it not really matter? Given the lack of a manual and fuel sticker I have no way of knowing what was recommended back then. Hopefully someone here does :) If there's anything else I need to know about this type of beast please share that as well.
Many thanks in advance!