I have never used automatic car washes and advised my wife against even using the no touch ones.
Regarding no touch car washes, my hypothesis is that the extreme high pressure water might force it's way into cracks and crevices (molding, trim, welds, electric,etc.), taking with it H2O, dirt,soap,salt, etc.
I think this mindset came from an automotive instructor's pet peeve years ago that claimed high pressure washing of vehicles/engines could result in intrusion past seals (bearings,etc.) because they were designed to keep lubricants in more than high pressure sprays out.
Opinions about no touch car washes?
Regarding no touch car washes, my hypothesis is that the extreme high pressure water might force it's way into cracks and crevices (molding, trim, welds, electric,etc.), taking with it H2O, dirt,soap,salt, etc.
I think this mindset came from an automotive instructor's pet peeve years ago that claimed high pressure washing of vehicles/engines could result in intrusion past seals (bearings,etc.) because they were designed to keep lubricants in more than high pressure sprays out.
Opinions about no touch car washes?