Cleaning / Restoring coolant tank

[Chi Town Runner]

Cant verify this but definitely interesting
Saw this on U-Tube
Don't know if this is old news but:


He used H3Ns03 acid = Sulfamic Acid
H3Ns0s = Can be purchased on Amazon:

Amazon.com : h3nso3 acid

I guess it would work on our window washer bottles

Frank