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Old 10-02-2021, 07:05 AM   #1
Bootkie2
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Default To clean or not to clean (fuel tank)

I've got a gasoline powered bowrider that is 16 years old and it's in the water all season sitting at our dock from May-Oct here on Winni. It's got a 70 gallon tank.

It's running fine currently but being the 3rd owner and not really knowing the full history, is it worth it to have the fuel tank cleaned?

And generally speaking for all of you out there, is tank cleaning part of your routine maintenance, if so how often and who does it for you (Or do you diy)?
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Old 10-02-2021, 08:37 AM   #2
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Never heard of gas tank cleaning, just draining of old or contaminated fuel. If it ain't broke don't fix it.
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Old 10-02-2021, 10:01 AM   #3
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In over 50 years of owning boats and I have never cleaned a gas tank. Unless you know you have a problem I wouldn't worry about it.

You can take a look at your used fuel filters, even dissect them, and see if they are picking up a lot of contamination. If they look decent I wouldn't worry about it.

I do put some dry gas in during the spring in case winter condensation has caused water droplets to invade the gas tank.
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Old 10-02-2021, 10:17 AM   #4
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Iíve had 2 boats since 1986 that stayed on water all summer and never cleaned the tank. For that mater I never changed the fuel filter either

Most tanks have a pickup that does not reach the bottom, with a screen. So even if a little dirt is in there itís not a problem.

And Iíd say the bigger the tank the less likely it could ever be a problem. Largest tank I had was 35 gallon.

Never cleaned tanks in lawn mowers or rotor tillers etc. my rototiller is 30 ish years old and I can see dirt in there for as long as I can remember.
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Old 10-02-2021, 10:18 AM   #5
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Wasn't there someone here a few years ago that posted about delamination or some other detritus in his tank that required a replacement or deep cleaning?

Added: here's a discussion about cleaning a tank: https://r.tapatalk.com/shareLink/top...ink_source=app

Sent from my SM-G950U using Tapatalk
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Old 10-02-2021, 11:03 AM   #6
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I agree if itís not broke donít fix it. Thatís what I was leaning towards but really interesting to get everyoneís point of view. Some good points raised. Thanks.
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Old 10-04-2021, 06:03 AM   #7
Dave R
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Quote:
Originally Posted by TiltonBB View Post
In over 50 years of owning boats and I have never cleaned a gas tank. Unless you know you have a problem I wouldn't worry about it.

You can take a look at your used fuel filters, even dissect them, and see if they are picking up a lot of contamination. If they look decent I wouldn't worry about it.

I do put some dry gas in during the spring in case winter condensation has caused water droplets to invade the gas tank.
Good advice about the fuel filter dissection.

You don't need to bother with the dry gas, your gas is already 10% ethanol which is quite similar to isopropyl alcohol (dry gas) when it comes to water absorption.
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