Jet Dry and other rinse aids

[CCC4me]

As I pressure washed the exteriors and the signs of some of my commercial property customers, I learned to put a tablet of Jet Dry in my water tank for every 100 gallons. It made all the difference in the world and the signage didn't water spot any more.

It's a hell of a lot cheaper than DI or RO water and may produce enough benefit on a car to make it worthwhile. I'll try it soon but wanted to see if anyone has already done so and what kind of results did they achieve?

[Calendyr]

Sounds really interesting. I would probably use it if there was a way to do it without a 100 gallon water tank. I use direct faucet connection and don't use a water tank. I am planning to get a really small water tank for clients who don't have outside faucets but I will get something in the 20-30 gallons range I think.