We have really hard alkaline water out here. So we have a water softener. I've read that salt based softeners are anathema with washing cars. I don't know. Having a Silky Silver means that swirling won't show up unless really bad. The piano black plastic on the Stinger shows swirls; it's just gloss black paint with clearcoat. And in really hard reflective light I can see some swirling on the piano black after 18 months; but it is rather light swirling. So, if the saline softener we have is causing any issues with swirling, it is happening slowly over time. I know that I have never had any spotting issues with the dark chrome using my method: the chrome is all spot free and doesn't require rubbing, just quick passes with the microfiber drying towel.
I've been reading some more this evening about soft water and washing cars. This product sounds good:
OPTIMUM NO RINSE WASH AND SHINE (ONR)
"Directions:
- Add 1 oz to 2 gallons of water in a bucket.
- Soak a quality Microfiber Towel in the bucket and wash one section at a time till the area is clean.
- Dry each section with Drying Towel.
- If surface dries before wiping clean, just wash again and dry.
Note: Excessively dirty surfaces may require a second wash before drying"
I would take my car to a wand hand wash if it is "excessively dirty", then proceed to ONR wash and dry.
On road trips, my big worry is how to get my car clean without resorting to a car wash tunnel (hate those things!) This method sounds good, but if your car gets filthy you still need access to a hose and "schnozzle" if there is no wand hand wash around (I didn't see a single one on my last trip). So far, on the five road trips I've taken, the weather hasn't begrimed my car to the point where this ONR method wouldn't work. One oz. to two gallons of water sounds like a heck of a deal!