ryeguy Posted August 16, 2021 Share Posted August 16, 2021 I'd like to buy opti products in gallon size to save money, but at my use rate it could take years to work through them. Once opened, if I keep them stored inside will they last indefinitely or could they go bad? Not including gloss coat, since I know that one has a shelf life. Quote Link to comment Share on other sites More sharing options...
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