Engine oil Mobil or Castrol

I run Mobil in all my cars. The regular 0W-40 is cheap and easy to get, as is the 5W-30 ESP for the RS3. Right from Walmart.

Now they use castrol power 1 ultimate 10w50

I talked with my friend who works in skoda dealership as mechanic, he told that castrol edge is the best motor oil for these mk 3 models because it comes from factory with it. They have run tests on Petrol and diesel engines and best for these engines is edge, because it's made for these engines.

Castrol Edge LL.

I personally use Castrol in all my vehicles, and if I buy used cars I preform an oil flush and start using castrol immediately.

Mobil1 is $25 a jug at the Walmart, my Blackstone Labs reports say it would be fine if I wanted to extend it well beyond the factory 6k interval.

In my 2020 A6 I had aral oil and it consumed 1l of oil in 15k km. Then I used castrol LL and now it does not consume a drop at all.

I like to use Castrol Edge Racing with the 278cc HPE2, made a big difference to running temps, top speed and effiviency.

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.