POT LIFE

I have a never opened Qt of urethane thats still liquid after 14 years! Its a paper weight for spec sheets currently.

I've used some MH186 hardener (about 1/2 pt) that had been opened two years previously. No gas blanket and no refrigeration. No particular problem. That's generally not recommended however and I think the formal maximum time is two weeks after first opening.

I have a pint of PPG DXR80 hardener for Delstar and a pint of DuPont 793S hardener for Centari that are both over 20 years old. Never been opened but are still obviously liquid (confirmed by shaking the cans). Still good? I may find out in another 20 years -- I still have a half gallon of DAR 9000 black leftover from the same time period :o).

I just used up a qt of omni mh 169 hardner nearly two years old but opened about 3 months ago. Worked fine.

The guys at the paint counter told me 30 to 60 days on everything. Now I think that's their way of saying it's yours you bought it after they mix it, don't tell me it doesn't match in 3 months. A disclaimer for them to us guys who clean up parts overtime for paint day. They have never heard of stuff like picklex.

If you drive over some of those rocks and stones you have around, I'm sure you'll have an opportunity to test that paint. A sliver of rock about 1/4" went thru a steel belted radial on me one time in N.H. Dardest thing i ever saw flatten a tire. Bet those little pieces of granite cause some pretty deep dings and plenty of windshield business.