i couldnt really find anything for that cheap, it would mean loads of searching, which i might do when im not busy but, if you want to save money in the mean time or with your new car try these links. it is common sense, but its often forgotten about and although you may not notice the difference in the short term, it'll help you to save fuel and your car could last longer..
http://www.churchill.co.uk/motor/drive_green.htm
http://wetryharder.co.uk/?p=112
http://www.mumknowsbest.co.uk/this_guest_writer.asp?t=5