Re: 100:1 Mix
That depends on what version of the label packaging your Opti-2 container has on it. I know doesn't make much sense but that is the case. I talked to their office about that discrepancy a couple of weeks ago. Their headquarters is 15 miles from here. They said and you can call them and verify if you are interested that it has always been a 100-1 mix but some packaging doesn't make that quite clear.
And of course it would work at 80-1.