I "freelanced" my first use of CarPro Hydro Foam. Was totally impressed with its quick and excellent results. Started with a pretty clean car (no dirt), but a lot of dust and some bugs. Took out my McKee 37's FoamMaster gun, put into it a couple of ounces of Duragloss 902 car wash concentrate AND added in a couple more ounces of the CarPro Hydro Foam, filled it will warm water and shook it up. Made sure my MF wash mitt was soaked with that mix from the foam gun, before putting the mitt onto the car (though next time may use a small bucket with extra 902 diluted in it for that purpose.) Rinsed down the car with my "firehouse" nozzle to get most of the dust off, then foamed it all. Lucky it was about 70 degrees, and of course was in the shade. Then with the sudsy mitt, first did the top 1/3 of the car, then rinsed foamy stuff off completely, then foamed the middle 1/3, rinsed everything, then foamed the bottom third, again each time rinsing off the wash/Hydro Foam sudsy mix with plain water. Did the wheels last with a separate mitt, each with an additional blast from the foam gun, then one final, total-car-rinsing.
Then got out my 1.3 HP AirForce MiniBlaster. The water FLEW off the car like it never has before, and only needed (except for the wheels), about 1/2 of one large waffle weave MF to get 99% of the water off, getting the remaining 1% with just one thick MF.
Only difference between this and my past technique was the addition of a couple of ounces of CarPro HydroFoam into the foam gun. The car looks terrific! And instead of typically using two very large waffle weave towels and about 3 regular MF, this time only needed about half of one waffle weave and only one regular MF to get the car 100% dry.
Was so impressed, bought the new McKee 37's improved version of its 6.5 HP air blaster and a larger size of the HydroFoam. Now joking that with the much more powerful air blaster, might just need one 16"X16" MF towel to get the last few drops of water off -- or maybe even cut my waffle weave towel in "thirds" (LOL).