A&J Posted June 14, 2016 Share Posted June 14, 2016 My dealer literaly gave me a used (about 5ml left) Opti-coat 2.0 in a syringe. He hasnt used it in years and told me to try it out. He also warned me that it probarbly isnt good anymore but to try it anyways. So my questions are: 1) What is the shelf life of OC once it is opened and used? 2) Is it still safe to (try to) apply to my car? Link to comment Share on other sites More sharing options...
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