guys, i ve been having problems with my v8, and while going thru things i pumped petrol through into a bottle. i ve never seen anything like it, looks like a bad pint of guiness. splits into 3 layers; petrol, a brownish layer and a creamy head. a lad who used to be in the r.a.f thought it looked like bacteria that he used to see on av gas. i know it stood for a while but....... has anyone come across this with petrol? i ve never seen anything like it. thanks.