Best RV Washing/Waxing Detergent?

I use Rain-X. Works great for me.

I have struggled for Years trying different Washes and Wax products to try to bring back the shine on Our 98 Dutch Star!
They all worked reasonably well but each time the job becomes harder on the Old Bones and Weakening Muscles, and the results were disappointing!
Then a New Car Wash opened in the Small City that We live in on Vancouver Island .
They had a Seniors Week deal going that offered a Free Wash of Your Choice ,so We took Our Car through and we're delighted with the results.
A week or two later I had taken the Motorhome to the City Sani Dump and had to drive right by the New Wash place ,so on a whim I decided to run the Motorhome through the Do It Yourself Wand Wash Bay!
I don't have any idea what the Pressure was ,nor what Soap they Use. but the results were beyond My expectations and the $20 that I spent were worth every penny!
I'm not advertising or trying to promote any particular Auto Washing place ,but I can tell You that I won't be buying any more Do it Yourself Wash Products in the future!
One caution... Don't wear Crocs ...The floor was slippery and the Pressure was pretty strong! I'm not exactly a Flyweight ,but that sucker pushed Me across the floor like one of those things that they attach to the Jet Skis! LOL!

I really like Wash and Wax All. I have been using it for years on the RV and the car. Worth every penny.

Right now I'm using Meguiar's Touch of Glass...gallon jug from Costco.

When that runs out I'll use whatever Costco has. It all comes down to hard work no matter what I use.

Any car wash soap will work. Im using turrle wash and wax right now because it was on sale whenI needed some.