I read it, and I re-read it. It still doesn't validate the theory that there are stocks of premium grade gasoline going bad in fuel station tanks. The tanks aren't that large in the first place. Stations typically receive multiple deliveries a week. Even if consumption numbers were reduced to a quarter of what they were previously, it's unlikely it would amount to having the tank refilled less than once-a-week. That's assuming that a station wouldn't have the tanks topped-up with each delivery, instead waiting until the tank was nearly empty before buying a whole tankful. Such a practice would be far from common. Even at a week old, gasoline is far from being on the path to ruin. Okay, so Stihl is in the 89-octane league with Echo. That still makes a mid-grade fuel requirement a rarity, and the legitimate market volume for it very, very small. Something that can't be said for premium-grade fuel, which is called for in a significant portion of the market. That's not to deny that there are plenty of people who buy mid-grade. We use to refer to them as "cheapskate treaters", compared to those who went the extra dime and "treated" their car to unnecessary premium-grade.
Originally Posted By: hate2work
Evidently you didn't read my post that you quoted. The answer is right there. Not only have I seen that first hand in my business, but it has been confirmed many times through the station owners as well. The fact is that they just don't move as much premium fuel as the other two, therefore there is a chance that you could be buying ( and paying a premium for ) less fresh gasoline. BTW, Stihl also recommends 89 octane gas, it's right in their manuals.