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Classic, Vintage & Veteran For Coventry and Meriden Models. Anything pre-Hinckley goes.

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Old 05-12-2011, 11:49 PM   #1 (permalink)
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Brain Furtz

We all do screwy things , here is my latest. Thinking my gas wasbad from sitting for a few winter months, I decided to put gas treatment in the gas tank. After I got about three ounces in, something told me I was screwin up. Sure enough; I was putting oil treatment in the petrol. Lots Zinc! It's going to take a while for this old Trumpet to stop smoking!
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Old 05-13-2011, 08:39 AM   #2 (permalink)
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Why didn`t you drain the stale gas and put in fresh?
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Old 05-13-2011, 09:59 AM   #3 (permalink)
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Do they actually make a gas treatment that restores old stale gas? All the treatments I am aware of are preventative products that help maintain the quality of good gas. The only gas restorative product I'm aware of is dry gas for treating water in the fuel.

I have to say that I've never had a problem with stale gas in a 4 stroke engine. I've had old premix carbon up 2 stroke engines, but 4 strokes always seem to be able to swallow it and run fine.

To test the theory, I bought an old bike that in addition to having been butchered by a kid that should not have been allowed to own tools, had a batch of gas in the tank that was so old it was almost black in color. I drained it into a jug and figured I use it to start a bonfire. Well, I ran out of gas one day on my lawn tractor and figured I'd give it a shot. Well the tractor ran just as good as it did on fresh gas. I used up every drop of that old ugly gas in that tractor with no ill effects. That was two years ago. I doubt if it was an E10 gas, so no issues with water or phase separation. But it was nasty stuff and still worked. I'm not suggesting you run something like that in a bike or car engine, but the stuff does seem to work regardless of age.

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Old 05-13-2011, 06:53 PM   #4 (permalink)
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I've added Gumout carb cleaner, the spray type, to old fuel and it's worked well. A word of caution.....don't use a lot of it as it can dissolve plastic fuel lines (not the large heavy motorcycle type, but the small ones that are used in string trimmers, etc.)

I do wonder about the fears of "bad fuel" and if it's overblown: Jim
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Old 05-13-2011, 08:26 PM   #5 (permalink)
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Originally Posted by jimballard View Post
I've added Gumout carb cleaner, the spray type, to old fuel and it's worked well. Jim
Now that you mention it, I bet you could add nitromethane from a hobby store and you might find some oomph in that old engine you never thought was there. Probably only once, though.

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Old 05-14-2011, 04:44 AM   #6 (permalink)
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I have to say that I've never had a problem with stale gas in a 4 stroke engine. I've had old premix carbon up 2 stroke engines, but 4 strokes always seem to be able to swallow it and run fine.
Rob
Well Rob, you've touched on an interesting topic, that gets a fair bit of discussion by northern hemisphere owners as opposed to us in the south. Your experience will, no doubt, cast a shadow or two over many testimonies about "bad gas".

I've read many, many testimonies warning of the inherent problems that aged gas can bring. This page could not fit but half of these.

Living in Oz, where bikes/machinery are not "wintered" this topic just never comes up anywhere. So we are less qualified to comment on the veracity of the "bad gas" stories abounding on this and other forums.

However, I have had fuel sit in my T120 tank for about three months, whilst I was laboring through one thing or another. When I fired her up, she ran this "old gas" as if it came straight from the pump.

Hearing this from you, I'm firmed up in my opinion that "bad gas" is a very subjective thing and oft quoted to explain no start and poor running problems that actually were caused by anything but "bad gas". RR
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Old 05-14-2011, 04:48 AM   #7 (permalink)
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I do wonder about the fears of "bad fuel" and if it's overblown: Jim
And so from the infinite dark recesses of the mind of our resident "village idiot" comes a small but certain revelation that "bad gas" may not be so bad after all.

Stand up and listen folks, Jim's on to something here so pay attention!! RR
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Old 05-14-2011, 05:06 AM   #8 (permalink)
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Quote:
Originally Posted by RetroRod View Post
Well Rob, you've touched on an interesting topic, that gets a fair bit of discussion by northern hemisphere owners as opposed to us in the south. Your experience will, no doubt, cast a shadow or two over many testimonies about "bad gas".

I've read many, many testimonies warning of the inherent problems that aged gas can bring. This page could not fit but half of these.

Living in Oz, where bikes/machinery are not "wintered" this topic just never comes up anywhere. So we are less qualified to comment on the veracity of the "bad gas" stories abounding on this and other forums.

However, I have had fuel sit in my T120 tank for about three months, whilst I was laboring through one thing or another. When I fired her up, she ran this "old gas" as if it came straight from the pump.

Hearing this from you, I'm firmed up in my opinion that "bad gas" is a very subjective thing and oft quoted to explain no start and poor running problems that actually were caused by anything but "bad gas". RR
Slightly off topic but relevant. While cleaning up a shed a while back I found a 20 litre drum of unleaded I had filled and forgotten about over 10 years ago, didn't feel inclined to pour it into the car so used in the mower, she drank every last drop without so much as a burp or a hiccup, certainly makes me question the old gas/petrol theories.
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Old 05-14-2011, 08:34 AM   #9 (permalink)
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I hadn't run my Falcone for nearly a year. It's been stood in my yard with a tarp thrown over. Last month, I went to start her up. The fuel has been in for all that time, with nothing added. She started first kick, and sat there ticking over at 400rpm, as if nothing had happened. Similar story after sitting for 6 months, with my wife's 900 Thunderbird. Started right up. Bad gas? No such thing.
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Old 05-14-2011, 08:52 AM   #10 (permalink)
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This topic is just more proof that just because you can do something doesn't mean you should do it.
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