Bad Gas!!

4127 Views 14 Replies 6 Participants Last post by JimJoe, Mar 27, 2009

Pappy19

Discussion Starter · Feb 28, 2009

There was a great article in the latest Outdoor Life regarding this new ethanol induced gasoline. It seems that after a few weeks, especially in the colder weather, the ethanol seperates from the gasoline, and then starts to gunk up. The question in the magazine was for marine engines, but holds true on any gasoline engine. Point is to use Stabil or similar product in all gasoline tanks or you may experience somr unpleasant results.
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JimJoe

· #3 · Mar 1, 2009

As I made my PhD in chemistry I should know a tiny bit about. So you might know that Ethanol holds roughly 4 % water. Below that level it will take up water from the air. This is called azeotrope. So this mixture tends to reach this azeotropic composition. If air is accessible within the engine or the tank I do not know. It would be interesting to know if the Ethanol used as fues is - expensive - pure EtOh or the cheaper azeotrope.

Jim

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JimJoe

· #15 · Mar 27, 2009

Pappy19 said:
I didn't actually check in my manual, but the dealer tech checked his maintenance board on his Ford computer and it said 100k on the TS tranny fluid. I doubt that I will go that long, like maybe 50k, but I probably won't drop the pan and change the filter, will just go with the refill. Dealer charges about $135 for that alone, so it ain't cheap. It's a new Mercon 5 or something special.

Dexron III is fine, too. I have a bottle sitting on my desk

My dealer things every 30k for the change but 100k should do fine if you do not tow heavily and do a lot of highway driving.

Jim

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