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Old 04-12-2021, 02:47 PM   #1
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Algae prevention in diesel fuel tank

Heard a horror story from a neighbor a while ago: A few years ago her motor coach broke down because of algae in the fuel, presumably from a fuel station that had old fuel.

Does anyone use an additive against algae? Our dealer said put Seafoam in every fill up. Product information does not mention algae. Thanks for any advice.
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Old 04-12-2021, 02:51 PM   #2
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I use Biobor about every 3 times I fill up and if I am parking long term I will fill tank and use it. I also use Startron, which is an enzyme treatment.
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Old 04-12-2021, 02:54 PM   #3
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Yes, if STORING (vs burning) diesel add BIOBAR JF to kill "algae".


And if storing absolutely fill the tank before storing to minimize condensation.
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Old 04-12-2021, 04:46 PM   #4
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I use Biobor JF every time I fuel. My tank was full of microbes when I bought it. I couldn’t go a thousand miles without a clogged filter. I filled the tank with the recommended amount of startron for diesel and started using biobor. No problems since.
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Old 04-12-2021, 06:17 PM   #5
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Your neighbor's experience is a good reason to use busy stations.
Busy truck stops cost more but don't have the problem.
I stopped at a much cheaper truck stop and found out why they were
cheaper, very hard to get in and out. Guess what, I got the algies.
Changed the filters, made it home and rigged up a shade tree fuel
polisher. I had an elect fuel pump and a filter that I bought at Tractor
Supply. So with some tubing and wire, I pumped out of one side and
back in the other. I let it run for a couple of days.
Of course I use Biobor also
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Old 04-12-2021, 07:18 PM   #6
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Thanks all. I ordered Biobor and Startron from Amazon and will add to the tank before starting out on our trip home.
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Old 04-12-2021, 08:14 PM   #7
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21 years of diesel RV's with no algae problems and I live in the Pacific North Wet.
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Old 04-12-2021, 08:29 PM   #8
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My ISC sat for prob 3-4 years and never had new fuel added - it ran fine when I got it in 2016.

That was prob prior to 2016> when more bio fuels were used. I have since made sure the fuel is only a max of 12 months old for anything about 50 percent capacity. I have recently added an algicide for minimal use during covid
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Old 04-13-2021, 03:43 PM   #9
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I have been using Diesel Kleen for years with a "maintenance" dose of Biobor for past years. I recently heard of Startron's benefits so I tried it this last fill up. Has anyone used all 3? or is the Startron pretty much a replacement (hopefully superior one). After having to do a fuel filter change on-the-road a few years back I learned to stay away from the low-volume stations wherever possible.
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Old 04-13-2021, 04:36 PM   #10
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I use power services kleen diesel a few times a year, but always before its put away in storage. It kills algae, removes water and conditions it for storage.
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Old 04-13-2021, 04:38 PM   #11
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Yes, Biobar JF is a common algaecide for diesel fuel.


Well known in the marine industry as well.
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Old 04-13-2021, 11:50 PM   #12
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We do not travel all the time...sometimes in place six months. We always keep the tanks full when staying in place for extended periods.

This is what we use

Star-Tron
Biobor and
a couple sets of extra filters just in case
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