Robert Johnson asks: mystery black stain on yeti?
So my cooler holder (as seen in the picture below) is powder coated silver and my cooler fits in pretty snug. where the yeti touches the aluminum cross bars there are black stains that form and on the cooler do not come off. if i don’t at least wipe the loose black stain off the cooler it does sometimes drip onto the deck. I have no idea why it is turning black and was hoping someone on here may know why or someone may have a solution to making it stop or getting the stains off the cooler and aluminum.