Question here. I have a bottle of Sta-bil fuel storage treatment that I've had fornprobably a little over 2 years. Issue is I've kept it in the garage the whole time-been through warm summers and very cold winters (several days of negative temps ). Is this still good to use? I was going to add some to my tank here pretty soon as the Ohio temps are taking a steep dive into the 30s in the next couple of days.