Originally Posted by oilman
The Mobil 1 15w-50 is good stuff but not the best (group IV oil), if you want the best then you are looking at an ester based synthetic such as the Silkolene Pro S 10w-50 or the Motul 300v 15w-5(group V oil).
Trouble with Mobil 1 is you pay over the odds for the "Mobil" name.
Cheers
Guy
http://www.opieoils.co.uk
Saying that, when i changed my running in oil to Silkolene 15-50, my tappets havent stopped knocking since. Any idea what it could be? there wasnt a faulty batch of oil or anything was there? as it looked really thin when i put it in.