What worked very well for me: - remove the (empty) tank from the car - fill it completely with water - pour plenty of washing pouder in it, and stir well for some minutes - let it sit like that for two days - with a hard brush, you can clean out everything (If your arm is not like Popeye's you should get it through the opening) - pour it out, rinse very thourougly, dry very thourougly ... looks like new again!! bye, Ralf. > I removed the tank baffle and cleaned it. As I began to inspect the > inside of the tank, I wasn't surprised to find lots of crud at the > bottom. But I hadn't stop to consider the best way to actually remove > this flake-like crud. (looks like rust particles, even saw a small > leaf!) > > Anybody got any suggestions that worked for them? > Thanks > > Eric > Dunedin, FL > VIN# 5557