Distilled water for final rinse after washing your truck

Thomcat · April 15, 2020

11 hours ago, dieselfan1 said:

Your water softener is actually making it worse IMO. You're adding salt to it.

I can tell when I use hot water (softened) or cold( not softened) on my black truck.

I have the water softener connected to internal spigots including one in my garage which I intended for use washing cars because the untreated external spigot contain dissolved minerals which will spot paint and glass.

And both, even the softened water, will leave dried spots although the softened water leaves less. Found the solution using the water treatment cartridge from a pool supplier that fits on the end of the hose designed to be used to treat water used to top off or refill my outdoor hot tub. Good for 10 refills of the hot tub or who knows how many car washes.

An even better cheap and easy is to put on a slicker and soap it down during a thunderstorm.......no spotting after drying when the rain stops. But, of course you're dependent and at the mercy upon the weather.