Yes. Full stop. If you wash your car more than once a month, it’s a no-brainer. You’ll save time. You’ll save money on drying towels. You’ll save your sanity from fighting water spots.
Here’s the weirdest part: Your car will feel hydrophobic after a few washes. That means water beads up and rolls off like it’s terrified of the paint. That’s not magic—it’s because your paint is completely stripped of mineral deposits, so any wax or sealant sticks better.
One guy I know started using RO water and then refused to let anyone else wash his car. His wife called it a “troubling obsession.” He called it “paint preservation.” Both are correct.
A Few Funky Nitpicks
RO systems are slower than a regular hose. Like, slow drippy slow. You won’t power-wash your SUV in five minutes. But you know what that means? You get to be intentional. Enjoy the process. Listen to a podcast. The water comes out gentle and pure. It’s basically a spa for your car.
Also, the filters need replacing every year or two. That’s a small chore. But every time you swap a filter, you’ll notice how filthy the old one is. It’s gross and satisfying at the same time. Like picking a giant scab. Don’t pretend you don’t know the feeling.
