All right, Chovynz, I am doing this RIGHT NOW! I should post Before and After photos, but then you would all know how icky the bottom of my kettle has gotten (and nobody would ever drink a cup of tea at my house again). 
So I looked in the cupboard for the vinegar, and found:
- Malt Vinegar
 
- Cider Vinegar
 
- Italian Balsamic Vinegar
 
- Italian Red Wine Vinegar
 
- Rice Vinegar
 
- White Vinegar (which is primarily used for mopping the kitchen floor in my house, not cooking!)
 
I kid you not! We have SIX kinds of vinegar in my pantry! LOL