Never again greasers on (car) discs
I had really followed all the advice: lemon juice, wet newspaper, coke, alcohol, silicone remover, sidolin, and so on. Nothing helped, and with every rain, my windscreen wipers smeared again and I was as good as "blind" especially at night on the counter.
My favorite miracle remedies are at A.T.U. (Auto parts Unger) and certainly in other stores. It is a glass cleaner called "CW 1: 100" or "CW 1: 200". It is an orange liquid.
100 ml are about 5-8 euros. A few splashes on the windshield and clean with a wet sponge until it foams. (Do not use a pot scratching sponge!) Also wash the windscreen wipers properly. After that is not a greasy to see more, so really super streak-free!
Put another dosing cap into the wiping water, and the condition lasts really long. If it smears again after a long time, e.g. if 1000 flies hit the target, repeat the process.
