Yeah, depending on how intense I'm feeling when I clean my 150, I'll sometimes change the water 2 or 3 times before I even get to the main body, especially being blk. Still looks new!

 

I have, also... And notice that the paint is different, there's swirls to all hell on the FD trucks, and that they never shine quite like any red F-150 taken care of. I don't know about your department, but at mine, we even use these floppy wash brushes... the liks of which will never see my paint.

 

Check out Wizards brand of car care products. My favorite "Mist and Shine", one of the best car care products ever. No other products I have tried even come close to the results I get from using Wizards products.