re: priming the hot water line to help new model DWs
I spoke recently to the owner of our local appliance store. I am using a 2001 MOL Bosch DW and am sitting on a five year supply of phosphated detergent (Electrasol/Finish----some of the packages say Electrasol because they are THAT old! I horded it from Costco plus friends with a KA gave me three 100-ct canisters because the door of their KA would not close over a Powerball, the dispenser was too shallow), and it cleans just fine. But I wanted his take on the newest DWs, which use even less water, and whose chiefly use phosphate-free detergent, unless they horded like I did.
His take:
1. Cycles on new DW are longer to compensate for lower water use. No way around that. Makes me wonder how effective a Quick Wash or "Party" cycle would be in a new machine. My Quick Wash cycle is pretty good but it's a 2001 model.
2. He reminded me that the initial rinse is generally NOT heat-boosted by the onboard heater, unlike the final rinse where the temp is generally booster by the heater. That is, whatever temp comes into the DW during the first rinse is what you get for the first rinse. Therefore, he recommended priming the hot water line, using the sink faucet, before starting the machine, in order to assure the highest temperature incoming water for the first rinse. He has a new model Bosch at home (they swap out floor model-dented machines regularly so he and his wife can assess/compare cleaning ability) and they get good results with phosphate-free Electrasol IF they prime the hot water line----and if they don't prime, they see the difference: inferior cleaning.