Fuchs Titan Supersyn Longlife 5W-40

FROM MOBIL 1 TO FUCHS TO SEE THE DIFFERENCES – Has been used Mobil 1 0W-40 for over 20 years in my E30, E36 and now in ML320 and E350 and recently change from Mobil 1 to Fuchs Titan Supersyn Longlife 5W-40. 2 years ago I had to replace a rocket cover gasket on my Ml320 and there evidence how nice and clean under the rocket cover due to the used of Mobil 1 and in few years time I will remove a rocket cover out to see the result of using a Fuchs oil and write another review on it. My ML320 now almost 320 thousand Km on the clock and I did the oil change every 10 thousand K even though the manufactory recommended every 15 thousand K