FWIWFactory fill of a 26 VW Taos - 1.5 L Turbo motor- was dumped today at 1000 miles after break-in completed. Refilled with Castrol Euro Car 0w20. The old oil looked darker than I would have expected. The engine seems quieter and smoother with the new oil, but it could all be in my head. The new oil goes in a bit dark as it is a darker green colour in virgin form, easy to read on the dipstick.
I was surprised to find out that you need to use a new oil pan drain bolt on each oil change as the washer does not come away from the drain bolt. This is a stupid system, and a waste of good drain bolts, why mess up a good thing by just replacing washers instead of a full bolt. I've read where you can cut off the washer and then use replaceable washers but I didn't want to mess up the bolt as I had no spares to work with. Never seen this in many years of changing oil.
A friend of mine has a VW with similar bolt situation. I'm not sure which year/model but he uses a mity vac for OCs and doesn't touch the bolt.