I have been using the Mr Clean AutoDry sprayer that removes the water spot causing minerals. It has worked well on the whole bike top to bottom. Sadly the product has been pulled from every shelf around here and I am out of the water filter refills. Refills online/ebay are expensive now. Wondering what else you guys use to keep from getting water spots on black on final rinse?
Here is how I wash my bike.
Wheels first and along frame, underneath.
Then wash top to bottom, then I would switch the sprayer to filter the water.
Makes the water bead up on chrome, plastic, and paint
Last I blow the water off the whole bike with a leaf blower.. tada no water spots