Inline Water Filter I Am Looking For An Inline Garden Hose Water Filter To Remove Scale Ect When Washing My Car?

I am looking for an inline garden hose water filter to remove scale ect when washing my car? - inline water filter

The only person I know, Mr. Clean car wash across the filter cartridges, which only takes me two washes with water used super hard here in the south. Expensive but worth it for me.