Engine oil Mobil or Mannol

Any A3/B4 euro oil. M1 0W40 is really good and well priced.

These engines need 40w either 5w40 or 0w40.. I ran 0w40 Mobil 1 syn euro formula for the 60k miles I had my GTI, it's cheap and readily available in 5qt at Walmart, thinner on cold start up it when hot is still 40w, it's also the factory recommended by Porsche

Mobil 1 ESP 5W30 and Delvac 5W40 are right next to each other at Walmart and usually within a dollar of each other in price. Our 2 cars use Mobil 1 ESP and my diesel Jeep uses Delvac 5W40. Both are good oils, so I think it will just be your personal preference. Blackstone tests will tell you the story on your oil and intervals better than Reddit.

Mobil 1 Turbo Diesel Truck 5W-40 in an ALH since new. 10K OCI, engine with 280K running like new.

Mobil 1 ESP 5W40

Mobil1 is great oil and what I personally use.

One of my cars has 240,000 miles and burns 1/2 a quart in 10,000 miles using Mobile 1 5W-20

10W-40 full synthetic Mobil 1 fixed that on my 05 Rio with the B6 Mazda engine. The sound goes away shortly after an oil change and it stays away for about 2 or 3,000 mi until the oil breaks down and it starts to make the noise again.

Using Mannol for my diesel.

Pouring it in it seemed thinner than the rating would suggest. When I turned on my engine (NC MX-5) I noticed a new ticking noise that doesn't go away.

Turns out it's the hydraulic lifters.