[Peter Punter]

Originally Posted by SilverSurfer

Depends if Its pub talk or practical motoring. Millers cfs get good word spread. but what proof Is there that its better in a road car. Opie oils vehicle selector will recommend a range of semi and fully synthetic all depends on the thickness of your wallet.

Good point:

How many people recommending oils work in the industry, spend time in the factory and lab, have independent analysis results for the oils they use / sell (for different mileages or hours of use,) have back to back comparisons for different oils on a dyno, and have seen the engine stripped down to examine the wear?