Bear

You've also got to remember that, although the forum is free to us end users, someone has to pay for the bandwidth at some point. Therefore 7 threads of 10 or more pages on top speed, knee down, fastest colour, best oil, best tyres and blah de blah do have to be cut down on at some point.

The definitive answer to all these questions are as follows:

Top speed: slightly slower than you think.
Best oil: Stuff from the garage. Vegetable oil is no good.
Knee down: Regularly when I check my tyre pressure, change the oil or anything else that involves kneeling down.
Best tyres: Try the round black ones, I find they work very well. (Thanks Sid Squid)
Fastest colour: Any colour you like*. Let's be honest, we all know that really, right?

*as long as it's black