Simple green is what I use, my electric Karcher washer has a washing wand, and the one with a marble in it, that really gets things done, the regular nozzle has an adjustment on it, that when you turn it down, it lowers the pressure, and draws the soap out with a smaller amount of water, just spray it down, let it soak a bit, then turn the nozzle up to full pressure, and shazam. I still like to go over it with a soapy mitt, then rinse, and blow dry, and yes, an electric yard blower works good to, the detail shop I take my Mustang to, use them to dry their customer cars. Bob