Rust Encapsulator Black Qt.
Product Review (submitted on August 7, 2011):
I bought this product to do the under body of my vintage Pontiac. I did a rough sandblast first and then brushed on the Encapsultor. It goes on well and will make a good primer for the black topcoat since it's already black.Coverage seems about as stated, but I bought Rustoleam "Rust Encapsuator" in a spraycan at HD ($7.00) to do all the seams first for good penetration.