i was going to wash her but didnt, i warmed her up, carried out a upper cylinder head clean, so spray half a can into your intake manifold, let it sit for 5, run the car and take a vacuum line off and while its running spray the 2nd half can, so it cleans your intake, your valves and clynders... well its ment to anyway... didnt notice much difference in driving, slightly, but will let you's know fuel economy in a week or 2, depends how i drive, i roughtly get 620km now...