Piston Slap: Hands-on Questions for the Touchless Car Wash?

Seth writes:

Sajeev,

I’ve admired your columns from afar for years, as a non-commenting TTAC reader. I especially appreciate your tenacious appreciation, possession and maintenance of cars you love. My automotive life is not nearly as exciting or robust.

While I love my cars, with two small children, a wife and a full-time job, I only have time and money for two at a time (his and hers). I aim to keep them for at least 10 years each. So, I obsess over the scratches and dents knowing I’ll be stuck with them for that long. Ridiculously, I even worry about scratches from washing them.

Which brings me to my question: What’s the best automatic car wash to use to minimize paint damage?

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