Car wash water filter-recommendations

[bmlfc88]

Did a contactless (paintwork) wash this afternoon.

Bilt hambered the wheels, blasted with jet wash, hand washed with wheel bucket. Then snow foamed and blasted the foam off with the jet wash and final rinsed with the filtered water (still at 3ppm currently). Took 25 mins start to finish including getting the kit out and putting it back, much quicker!

Strange you are getting 3ppm… did it leave any water spots?

My car is filthy, hasn’t been washed in about 4-5 weeks, first chance I’ll have is Friday and it’s going to be way too hot

 

[Vish8895]

Strange you are getting 3ppm… did it leave any water spots?

My car is filthy, hasn’t been washed in about 4-5 weeks, first chance I’ll have is Friday and it’s going to be way too hot

I might have tested it too soon but no, no water spots. I recall reading online under 20-30ppm shouldn't really see water spots, unless you've left big patches unrinsed

 

[bmlfc88]

I’ve read the same; I’m sure under 10 should be fine!

 

[scottys.m3]

How about reverse osmosis water ?