I buy 5 gallon pails of Evaporust from these guys. Shipping is reasonable, by the UPS people.
at the rate i'm going i should just bite the bullet and buy the 30 gallon concentrate its first time i saw that.. checking the prices the concentrate would be the only thing to work out cheaper for me
a couple of the stupid ideas i had with the stuff were spinning the car upside down on the rotisserie and filling up the roof with it and then toss a bunch of parts in also as well. my other idea was to cut some 2" pvc pipe in half long ways,cap the ends and now you have a trough for a swelling or crusty deck lid seam and door seams it might get in there better then blasting the part ever would...