Mercedes S Class Wiper screenwash blocked **SOLVED** Simple fix 

My Windscreen washers were completely blocked and I didn't know why, as I couldn't see any issues and the bottle was full. This is also an MOT failure in the UK, so needed to be sorted. I called my local garage to book it in with them and they suggested I tried to clear it out and take out any "gunk" and sure enough, when I emptied it there was a load of "gunk" over the filter and all on the bottom of the container. Apparently this is what happens when some washer fluids are mixed together. I managed to empty it and clean it out a bit, and flushed it out with lots of water and couple of times and now it works fine. I will now buy proper washer fluid and stick to the one and only brand. My windscreen wiper blades are "Magic vision" type by the way. Thanks for watching.