rdvt4me Posted June 22, 2016 Share Posted June 22, 2016 I got a tube of Opti-coat 2.0 3 1/2 years ago and used it on my wifes new car. We have replaced that car with a new one. I still have the tube of Opti-coat 2.0 left. There is about 20 ML in the tube. Is is still good to use on a new vehicle? Link to comment Share on other sites More sharing options...
A&J Posted June 23, 2016 Share Posted June 23, 2016 As others told me. As long if its not gelled its fine to use. So if you kept it closed and sealed, kept away from sunlight and/or extreme temperatures and as long as its still in liquid form its fine to use. There is no shelf life for OC. Link to comment Share on other sites More sharing options...
Setec Astronomy Posted June 23, 2016 Share Posted June 23, 2016 I don't know about sunlight and extreme temperatures, I think the most important thing is moisture, that's what's going to initiate the cure, and of course evaporation. So the most important thing is keeping the syringe tightly capped with a minimum air bubble. Link to comment Share on other sites More sharing options...
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