Thanks, I need to top all my fluids off anyway. But I have done that as well... Brian M. Cembor M is for monkey That is almost certainly what it is. I've cleaned mine by reaming out the nozzle with a paper clip or something similar that is of the approrpiate size. Oh, and don't forget to check the reservoir to make sure you're not out of fluid :) (Guess who's forgotten to do that...)