On saturday i was an idiot and after topping oil up,left filler cap off and part way on first drive suddenly occured to me that i couldnt remember putting the cap back on. Needless to say,engine now plastered in oil,so has anyone washed a micra k12 petrol engine,was thinking of steam cleaning as we have a polti steam cleaner. Is this a safe idea or am i going to cause probs? Thanks Chris