Hardener is used in single stage paint to make it more resisitant to fuel, tree sap, etc. Mine is still OK after two yrs of use. I use a GM gas cap too.


My \'64\'s in the Gallery
Pictures in my Photobucket
1964 C10 Custom Cab 350/700R4
1964 Suburban 350/700R4
1979 Ford F350 4x4 400/c6