It would seem the proof is in the pudding, or foam in this case.
For Whirlpool dishwashers at least. I know for sure that the PowerClean and Voyager platforms do because it is shown in the cycle timing diagrams in the tech service sheets. The new Whirlpool doesn't have that shown on its tech manual, only the diagnostics sequences. I figured, after unloading today, that I'd close the detergent cup and let it go empty just to see what the water looked like after the cup snaps open.
I remember a thread recently about when and how the dispenser did its thing, but a few thought it would be ridiculous for rinse aid to be used in the main wash. To me it seems sensible as it helps to further soften the water and most likely keeps soil from sticking back onto dishware. It could also be why I've seen recommendations for all-in-one detergent pacs to turn the dispenser down to its minimal setting if possible to keep from having an overabundance. I can see why. Maybe this is why Finish Quantum is so sudsy?
Mind you, my dispenser is set to 3 because our water leans on the hard side, and with plenty of soil on dishes in every load and detergent all mixed together, I highly doubt suds reach this extreme, but in this case the water had a nice slick feeling to it. I set it just to Normal, and it ran a prewash, so any residue would have been plenty rinsed out. I also opened it before the drain and saw not a bubble, just clear water, so that takes care of the question of remaining residue. Surprisingly though, with this amount of foam, the pump didn't gasp for air, and the wash action inside still sounded plenty forceful.

For Whirlpool dishwashers at least. I know for sure that the PowerClean and Voyager platforms do because it is shown in the cycle timing diagrams in the tech service sheets. The new Whirlpool doesn't have that shown on its tech manual, only the diagnostics sequences. I figured, after unloading today, that I'd close the detergent cup and let it go empty just to see what the water looked like after the cup snaps open.
I remember a thread recently about when and how the dispenser did its thing, but a few thought it would be ridiculous for rinse aid to be used in the main wash. To me it seems sensible as it helps to further soften the water and most likely keeps soil from sticking back onto dishware. It could also be why I've seen recommendations for all-in-one detergent pacs to turn the dispenser down to its minimal setting if possible to keep from having an overabundance. I can see why. Maybe this is why Finish Quantum is so sudsy?
Mind you, my dispenser is set to 3 because our water leans on the hard side, and with plenty of soil on dishes in every load and detergent all mixed together, I highly doubt suds reach this extreme, but in this case the water had a nice slick feeling to it. I set it just to Normal, and it ran a prewash, so any residue would have been plenty rinsed out. I also opened it before the drain and saw not a bubble, just clear water, so that takes care of the question of remaining residue. Surprisingly though, with this amount of foam, the pump didn't gasp for air, and the wash action inside still sounded plenty forceful.
