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To fill or not to fill?

Old 10-25-2020, 04:13 PM
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Default To fill or not to fill?

Iíve been topping off my gas tank for the last 30 years for the winter months after adding the recommended amount fuel stabilizer. Iíve had inboards and outboards but always have done the same. I have never had an issue with any water in my fuel following this procedure. Over the last few years I have heard others that donít top off their tanks and just treat the fuel thatís remaining accordingly. They also tell me they have no issues. Iím wondering what the consensus is out there and is there really any solid factual information on this.
Old 10-25-2020, 04:23 PM
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Fwiw

Winter storage fuel question
Old 10-25-2020, 04:24 PM
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Personally, I add Sta-Bil Marine 360 Stabilizer, top off the tank and run to the Winter Storage marina. I hold 137 gallons and burn about 10-12 to reach the marina. This has worked for me for the 20 years. It leaves enough room for expansion and, so far the Sta-bil Marine 360 has served me well with no issues in the Spring.
Old 10-25-2020, 05:01 PM
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Stick with what has worked for you.
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Old 10-25-2020, 06:38 PM
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I have two 150 gallon tanks and keep them 2/3 to 3/4 full for the winter. The fuel is 89 octane ValveTec (E10) and I add no further treatment. Never have had a problem for 20 years. Still wish we would get rid of the E10 though.
Old 10-26-2020, 06:29 AM
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I always top mine off for two reasons. One, I've never had a problem doing it this way. Two, it's one less thing I have to do and pay for in the spring.
Old 10-26-2020, 06:34 AM
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I don't go through gas fast enough so I just stabilize whats in there
Old 10-26-2020, 02:44 PM
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I siphoned all the remaining fuel out of the tank to the extent that I could hear the rattle siphon moving around in the near empty tank.
Now I'm worried about excessive condensation build up.
I hope to be able to find a way to drain the tank as bone dry as possible.
There was not a fuel policy at the storage yard.
Some good arguments in this thread for and against!
Old 10-26-2020, 02:50 PM
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So no problems for 30 years and you want to change?!?!
Old 10-26-2020, 03:21 PM
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Originally Posted by Lou Gill View Post
So no problems for 30 years and you want to change?!?!
e 10 has not been around for 30 years
Old 10-26-2020, 04:54 PM
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this has been debated 10000000000000000000000000000000000000000000000000 000000000000 times
Old 10-26-2020, 06:30 PM
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I never mentioned I wanted to change, just looking for some factual information.
Old 10-27-2020, 06:30 AM
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Originally Posted by Clabman1968 View Post
I never mentioned I wanted to change, just looking for some factual information.
fact: its been debated a trillion times

you can read all day, all night, all week about the back and forth

why would you change your process if its been working for you?

you could conduct your own experiment if you'd like.
Old 10-27-2020, 06:42 AM
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This recent link provides what I feel is all the information one needs to make a decision. It's long, but it's important to read it all.

Winter storage fuel question
Old 10-27-2020, 08:50 AM
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I don't fill it up. A couple of 100 gallon tanks...if something went sour, that's a lot of gas to suck out in the spring.

The fuel at the gas dock at our marina is already treated...I don't add more.

Never have a problem come spring...so I'll do what's been working for me for decades.
Not sure what "factual" stuff you'll find. Of course the marinas say "Fill it up"...they want to make money NOW.
Old 10-27-2020, 10:57 AM
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Originally Posted by YeOldeStonecat View Post
I don't fill it up. A couple of 100 gallon tanks...if something went sour, that's a lot of gas to suck out in the spring.

The fuel at the gas dock at our marina is already treated...I don't add more.

Never have a problem come spring...so I'll do what's been working for me for decades.
Not sure what "factual" stuff you'll find. Of course the marinas say "Fill it up"...they want to make money NOW.
The marinas dont want you to full up because of a money grab. That is just nonsense to be honest. As far as the gas being treated at your marina? Did you ever ask what its treated with? Ive never seen marinas do that but it could be true i guess. That would be a prettty nice service. The gas coming from the terminals is not treated with anything special. If you were getting a brand like mobil or shell they have a formula which may have a detergent in it but its mostly a marker to identify their fuel to so they can identify co mingle of product. I would suspect the fuel being delivered to your marina is unbranded fuel, nothing special about it. I lift it every day from terminals. I also see phase seperation. Im glad you have never had an issue but people suffer from it I promise. The fuel today is not the same fuel you used decades ago. Its a different animal in terms of its affinity for water. Just saying.
Old 10-27-2020, 11:27 AM
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Originally Posted by mystery View Post
this has been debated 10000000000000000000000000000000000000000000000000 000000000000 times
and you've made this same stupid comment 10000000000000000000000000000000000000000000000000 00000000000000000000000000 times
Old 10-27-2020, 12:30 PM
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Originally Posted by chainsaw42 View Post
and you've made this same stupid comment 10000000000000000000000000000000000000000000000000 00000000000000000000000000 times
He usually says do some research instead of asking questions.
Old 10-27-2020, 12:31 PM
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Some years ago, I took an engine maintenance class thru the US Power Squadron. Taught by the owner of a small, but well respected boat dealer.
His take...a couple ounces of condensation is not near as bad as a full tank of old, stale gas.
Old 10-27-2020, 12:45 PM
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Originally Posted by chuck34 View Post
Some years ago, I took an engine maintenance class thru the US Power Squadron. Taught by the owner of a small, but well respected boat dealer.
His take...a couple ounces of condensation is not near as bad as a full tank of old, stale gas.
Before E10? Gas does not go stale over the winter but 2 oz of water has the potential to do a lot of damage.
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