When I wash my E I get out the leaf blower and take a hot lap around all those pesky areas that weep water when you drive off. You know around the door handles and below the window trim ect. It gets rid of most of it. Blow and Go.

Works very well for detailing the inside, also.

Hey... it's an E, right?

If you are using a carwash be sure to use the spot free rinse. If you are a "Hoser" (DIY) just buy a new hose end sprayer and put a little Jet Dry ( similar dishwashing surfacant) in the bottle , let it fill with water and spray the car. Rinse it well and then take it for a spin. I've used it for years and it works great. :cool: