I watch those guys (Top Gear) all the time. I downloaded all 9 seasons.
I am pretty sure it's not really 10 rads for the engine. Something like 4 for the engine, 2 for the brakes, 1 for power steering, 2 for oil cooling, 1 for something else.
I remember when they drove it across the country (forget which country) they explained it all.
Search youtube for "Top Gear"
Those guys beat the snot out of a ton of cars I never knew existed.
That show is awesome!