I have seen almost every you-tube video and google site about this stuff. Just did my 94 toyota bed with it....and I now have to buy another kit because I ran out of product. The four bottles- (almost 1 gallon) didn't have enough coverage for my bed. I can still see white (orginal bed color) through the liner. This is so fustrating!!!
I used Herculiner in my bed area ,red in color,matches the Line-X in the engine bay very well. And goes on well with good coverage! Also holds up well!
I used the Herculiner in my Explorer and love it. Did the whole interior from firewall to back hatch before installing the Dynamat. Its a great combo and makes the dynamat adhere really well as well as making a moisture barrier.
I'm thinking maybe cause I used the tintable liner...the coverage is not the same as the reg black one.