Yes Mark we did. I was originally going to fill the grills only but after some thought I came to the conclusion that this car and others like it most likely will not run autocross in the rain, go to a car show in the rain, or taken out for a sunday cruise in the rain. So I removed the mechanics of the wipers and filled it. When detailing we always use Rain-X and other water repellent products that shed water anyway. I've been caught in the rain a handfull of times coming back from such events where the rain-x worked perfectly for the short drive back.