Originally Posted by oilman
Always go for the best you can afford in the car that you love, with the longer drain intervals of the top quality synthetics, over a period of time they can work out cheaper then their mineral based cousins.
Yep but I wouldn't change oil less often then 10k kms in a hard used turbo-charged petrol engine. New Scoobies and Evos have longer periods, still if they are hard used the oil which is drained during changed is very very black and dirty. It's worth to change it frequently - e.g. after trackdays.