Engine oil Mobil or ELF

Its perfectly fine. More likely their vehicle fitment data for your car is wrong, not you. I use Mobil 1 Advanced Fuel Economy in my NX, and used it for years in my previous RX.

I do 20k miles oil change interval on my RAV4. I use Mobile 1 extended performance and Fram Ultra filter. No problem at all

I use Mobil 1 ESP X2.

Available at Walmart.

It is approved by Mercedes and VW, it also meets the BMW requirement but is not approved by them.

I just go to Walmart and buy the big jug of mobile 1 high mileage engine oil and the most expensive oil filter I can find and just do the oil change in my driveway.

I use the Mobil 1 just like the sticker Porsche put on your car…

I've tried various combinations that include the mix of m1 5-40 with 5-50 but have now for many years kept it simpler w/ Mobil 1 5-50 every five thousand miles. It purrs as one would expect from a 195,000 mile 996 Turbo.

My Saab (2003 9-5 Arc Wagon 3.0 turbo) has a sticker that says Mobil 1

To be honest, the mobil 1 ESP 0w-20 is a fantastic oil and meets those specs and is at walmart for $8/qt

I've been running Mobil ESP 0w20 (VW508) since my 1st oil change at 3k miles (5 months into ownership), then another oil change at 7600 miles 10 months later. I've ran a few Auto-X events, a light educational track day (not pushing the car too much), and certainly am otherwise not shy with the throttle at all. I have also had 1k miles on my stage 1 tune since July.

You should stop using Mobil 1 oil period. Their oil is dog shit when it comes to wear protection, cold flow, burn point, and more.