Cheers for the fuel tip. I've always been a bit cynical about branded
fuels - I live next door to Shell's Stanlow oil refinery, and all the
tankers, whether they be Shell, BP, Texaco or Sainsbury's, all fill up
from the same tanks. I was convinced, therefore, that they are all the
same, but I'll give BP a try, just to see if it makes a difference.