Over Frothing & Miele 1065
Sudsmaster I done told you and told you, get a bottle of silicone based spray defoamer! *LOL*
As one who often uses vintage and otherwise non "HE" detergents in the Miele 1070 have soon learned never to be without defoamer. If one hears or can tell (thanks to the solid door cannot actually see inside) the washer is over frothing simply fill a cup with water, add a squirt or two of defomer,open then pour down detergent drawer. This is followed by a half kettle full of water to make sure everything is washed down. Instantly you can hear the foam clearing and the happy sounds of laundry slapping around. If things are really bad will add a squirt more defoamer as the machine fills for the first rinse as well.
Silicone based spray defoamers are not only good for knocking down suds, but keeping them at bay. This is why most all "HE" detergents contain silicone as the defoaming agent. Tide, Persil, Ariel, the lot all have the stuff.
While soap, mineral and other oils can act as defoaming agents, they cannot match the knocking and staying down power of silicone.
The only problem that can arise is if you continue the cycle depending upon how much foaming agents/surfactants/detergent is in the machine the excess froth may return. That is easily taken care of by repeating the above. Or, if in dobut simply abort the cycle once the foam has been knocked down and allow the machine to start rinsing.
If one is going to use non "HE" detergents often simply add a squirt of defoamer on top of the powdered detergent or into the liquid compartment with the liquid detergent from the start. Have used vintage Gain, Surf, Wisk, Tide, and even some rather frothy "garage" detergents with sucess this way.