Modern, high-strung “HE” washers unfortunately can’t tolerate the sudsing generated by traditional saponified-fat soaps. Like gas bubbles exerting pressure in the stomach, the suds force their way past bearing seals and wash out the seal lubrication. The special detergents are the only game in town with these machines. Attempting to simply “use less” of a sudsier formula gives a poor wash, coats the inside of the machine with gook, and gets into the bearings anyhow.
****Modern, high-strung “HE” washers unfortunately can’t tolerate the sudsing generated by traditional saponified-fat soaps.****
That is one of the benefits of making your own laundry soap, it is very low in suds...even more so if you use fels naptha as the bar soap. Ivory does tend to leave a film(a P&G product...:)