Always a good one this one. So many different opinions on it and always an interesting read.

Bob Rawle (for those who don't know, he is a mapping legend, just like our very own Silver Surfer ) says exactly what Scott says about fully synthetic being a load of pub talk. He swears by Shell Helix Ultra (10W40 from memory ) which he says give great pressure and runs at a really good temperature with no issues. And he uses it in all of his cars, including his 600bhp "Drag Scoob" and his GT3.