I would stay away from Jiffy Lube and the like. The people they hire are
the lowest on the mechanic totem pole, some are not mechanically inclined
or even very smart for that matter! I've had several very bad experiences
with this type of oil change service shop. One place (I think it was a
Jiffy Lube) ruined my (not VW) oil pan after stripping the bolt head with
the wrong tool and then putting the wrong replacement plug in! The next
day I went out to my garage and the floor was covered with oil, the entire
contents of my oil pan had drainned out! This was an expensive repair that
I had to get them to pay for. Imagine what would have happened if I took a
long drive after getting my oil changed! Given that it is very easy to
strip the drain plug in a Vanagon and overtightening is one of the most
common mistakes these bozos make I think it's crazy to take a Vanagon to
one of these shops. I now have a local mechanic do all my oil changes.
It's not much more expensive and cheaper if you consider the hassle and
problems not to mention the things they try and rip you off for.