terrible scrunching noise. now i know its not the wipers because i‘ve bought expensive ones so what could be causing this?
Clean your windshield. This if often caused by car wax on the glass. It's quite common if you use drive thru or do it yourself coin car wash. Much of the water used in these places is recycled, and even if you didn't select the wax cycle, the recycling filters do not get it all out. Use a non abrasive cleaner, I keep a can of Bon Ami here at the shop for just that purpose. It will cut the wax, after it is rinsed use window cleaner or windshield wash solvent to clean off any residue. The best way to clean the wiper blades themselves is with rubbing alcohol, the little alcohol swabs in a first aid kit work great.
Make sure that you are using the correct length. Go to Autozone, or similar, and have them look in their computer for the proper length. A 1 difference will make the noise.
they are trace metal elements that we need. YES but not in metal form.
Yes, your body needs these minerals. They are metals but they are broken down into their mineral forms.
I will assume you are buying the correct type of blade and size. Try adusting your arm setting.this could be a saftey hazard if something happens when you need them to work, so bring it to a dealer, or a mechanic if you dont think you can get it right.