Simon, thanks for all of the great advice!
For my sins, Im a chemical engineer by trade and qualified chemist, so all of the technical info is greatly appreciated. From my point of view - keep it coming!
Regarding my oil requirements...
The car in question is a Saxo VTS, which has been turbocharged. bhp ~ 240bhp @ fly.
The car has been mothballed since December and will be back on the road in the coming weeks, ready for a year of track action. (its my 2nd car)
So, baring in mind the extra abuse and higher oil temps the turbo is likely to generate, what oil would you recommend?
I have a large'ish oil cooler fitted, with no secondary thermostat, so on cold startup, the oil is constantly cooling.
One observation... For a number of years I used Mobil 1 oil, however I observed that the oil tended to seep past the camshaft oil seals?
Now this could have been a seal problem, but I put it down to the low viscosity oil and stopped using it... the problem went away? It was never a large leakage, more of an annoying drip that occasionally needed to be wiped from the camshaft cover joint.
I look forward to your recommendations.