Top loading Mobile Maids used a limited fill("three pints less than the UTILITY cycle") for the China/Crystal cycle. On the SU-70 models the DAILY WARE cycle was also run with a limited fill but used the heater with a longer cycle.

This model has the improved back top rack which does lift up and back slightly to facilitate loading plates on the bottom. People who used these machines got with a habit of filling the back of the bottom rack first to deal with that inconvenience. The earlier Mobile Maids and Pull-outs had a stationary top rack with a large gap in the center so loading the bottom racks was only a minor inconvenience. These dishwashers, especially those equipped with accessory cup racks, had a huge capacity because of their design and creative racking options. Only the top-loading Maytag portable, in my experience, held more stuff.

The big problem with these old machines, IMO, is in loading plastic items, even ones marked "dishwasher safe". In the old days, plastic things never went in the dishwasher because it was assumed that they wouldn't survive it. Now most of my stuff is sturdy plastic, but even they have their limits

It is impressive to pop the top of these dishwashers as they begin the DRY cycle. Even at 120 volts, that Calrod element glows impressively red hot and will melt any plastic item that sits above it or within a couple of inches. When I use my old Mobile Maid with plastics I run it on the China/Crystal cycle which doesn't juice the element during the WASH or RINSE cycles but, on some models, will turn it on for the first 5 minutes only of the DRY cycle, so read a manual and be careful.

The Plastisol problem is real but my family has owned and used 4 of these machines over a period of 40 years and none of them developed a rusted tub. My Mother was very careful when loading and we were trained to be careful as well. I've seen many KitchenAid dishwashers with porcelain-on-steel tubs that were chipped and beginning to rust. I would propose that before American dishwashers were manufactured with stainless steel tubs, being careful with an appliance that began its career as a luxury item was expected; users needed to treat them with some care and not like American Tourister Gorilla props.