Engine oil Mobil or Lucas

M44 1.9, Mobil 1 Super 10W40, though I have to admit I use Castrol Edge in everything usually.

I really like Mobil 1 0w40 European car formula, and for the filter, only OEM from the dealer.

I once used the 20k mile oil, but changed it at 12k; my engine seemed to run nore smoothly, after that. I swore off longer oil change intervals and went back to regular Mobil 1.

It is good oil! The only recommendation for C5 Corvette's and other cars.

I've used it, no problems

Yes that's what I've been using for my 2020 hybrid.

Mobil 1 0w-30 AFE has the correct certification, I just used that. Easy to find.

This is a late response but I just saw your post and it's exactly what happened to me when I took my 2018 GSW 1.8 TSI 4Mo in for the 20k mi service. They filled it with 508 00 0W-20. I didn't catch it until much later and I changed the oil myself at 27k mi with Mobil 1 502 00 VW approved 0W-40 oil.

I did my own oil/filter change at 27k mi with Mobil One European Formula 0W-40, since I'm a little uneasy about 10k intervals in So Ca stop and go traffic and 100+ F heat.

Yes, you can certainly use 506.01 in your TDI and it's used in many TDIs around the world. However, based upon some of the UOAs offered up, I'd suggest moving to 507.00. The 506.01 has shown relatively high wear metals.