A few questions for you.. 10..

[zippy656]

http://auto.howstuffworks.com/engine-performance-quiz.htm

i got 9 / 10

what did you get

[mowerman]

Hmmmm...only got 8/10 :doh

[lacroupade]

well you might have done better if they'd written it in Queens English.

A header is something a footballer does FFS...:doh

[clivvy]

meh, 7/10