Solution for water leakage from adaptor

I like to use my original aerator to wash dishes.Every time after laundry was done,I would unscrew the adaptor and switch back to my old aerator.Then I would switch back to the adaptor to do wash.A wrench is put near the sink for this purpose.It wasn't long before water began to leak.I called customer service but was told just to screw it tight,which I did and water still leaked.I thought of the teflon tape I used to install my shower head.I wrapped some around the adaptor about 3 turns.No water has ever leaked and I have not even changed the teflon tape.It costs only about 80 cents.I also taped the drain hose to the sink using masking tape.
Some of my tips for this machine are:
1.When I remove the quick connector,I wrap it around towel because water will shoot out even after faucet is turned off.
2.Machine tends to move a bit and the shop somehow got me caster wheels with locks.
3.It doesn't wash too big a load.It is hard to tell how much can be washed.I put clothes in a plastic shopping bad.It can hold about one and a half shopping bags of clothes.I turn on the washer and fill it up with water.After it is full,I open the lid and push clothes as further down as possible.So far,I have not had an unbalanced signal from the washer.
One complaint is that the control panel is too sensitive.Sometimes when I touch the panel and it is not even near the buttons,the machine would change to a different setting.
Where I am living now,electricity is cheap,about 6 cents per kwhr.It costs about $1 per month to use this washer.(I do about 8 to 10 washes a month).In the old days,I spent more than that for one wash in the laundromat.I still have to use the drier in the laundry room of this building but the savings have been considerable.