Camaro_Z28

I have some hardener for my clear that I have had for 6 months now, its half gone. I was getting ready to mix up some paint and saw that is said use within 14 days of opening. How important is this? its still sloshy and liquid, would it hurt to just use it anyway? Thanks

SSideExhLS1

iTrader: (1)

i have used activators(hardners), months after being opened for the first time, with no negative effects.

Whistler

iTrader: (46)

Pour it through a strainer into a clean glass or cup, and see if there's any crystals of hardened clear in it. Hardener starts to crystalize when it goes bad.

hawk232

iTrader: (4)

i just used some today that has been sitting for a year and a half now, to my surprise it was still fine!

vetman1

iTrader: (4)

As stated in earlier post, check it out for crystals. I used some ppg hardener last week that has been open for at least a year and it worked fine with no problems.