Here's the thing, I, for reasons unknown have an impossible time trying to use the tiny amounts suggested. "Four ounces of Crystal Seal treat up to 40 vehicles" Really? Not by me - that's 1/10 oz per car! Jeez-zoo, no way is this going to work for me. I am a big fan of Blackfire, probably bought a gallon or more over the years and I use a good bit more BFWD than others when I apply (gold pad - PCXP on #2) but it last and looks great.
So, this HM stuff has me interested, thanks for the review, I made a note to get some.