This question always comes up, which oil is best?

I found these two videos from V&E Perfomance.
They test 5 Different Oils on two different cars, and they show the difference the oil makes.
The 5 oils are
-Motul
-Royal Purple
-Nulon
-Castrol
-Mobil

Evo test

Hsv test


This test may or may not justify the oil as the test doesnt allow the oil to break down its additives over time, to determine whether or not this has any bearing on performance.
And doesnt give much of an insight which oil is best suited for 5000kms at a time.

But all in all, i reckon it was a good test.

Whats your oil?