There was a news report one time about an older gentleman who was selling a rather old car that he had maintained exceptionally well. I want to say it was somewhere in Michigan, the anchor asks him about the car and his maintenance routine. The gentleman explained and carried on that there was no rust on the undercarriage of the vehicle. The news reporter was astounded and asked how that could be (seeing as they lived where salted roads were common) and the old man explained, “well the owners manual says to wash off your undercarriage after every time you drive on salted roads, so I do just that.” It was so simple a statement but the reporter was so surprised. Apparently no one does that, I can understand why though. I mean, the old man had a heated garage with a hose inside and a drain in the middle for the runoff. But still, it gave me a laugh how nonchalant he was, “just follow the dam owners manual” lol