Need help!!! How long is gas good???

[chunknwind]

I was down at Lexington Marine today, and I was talking to a fellow in the service dept. about this exact subject. He was saying that the quality of gas has really declined and it will lose a percentage point of octane after only two weeks. So, if your motor says to use 87 octane and that's what your putting in, you only have a short amount of time before it's really only 86 octane. He was saying that it was really wreaking havoc on these new sophisticated motors. I guess when I buy my boat I will be using the high octane gas for a little more of a buffer.

[CTFSHWHISKER]

keeping it full helps it to not lose punch,lets less air in the tank therefore it doesn't evaporate out the good stuff,i stabil my gas all time unless i know i'm gonna run it every 10 20 days.when i was taking classes by poulan weedeater our instructor had 87 octane gas that was 120 days old and it would barely light with a match and it burned slow as kerosene.