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We have two 500kW generators at work. Each has a 1400 gallon tank; we go
through about 500-800 gallons per year. I expect that, despite the fact
that these generators are having their 21st birthday this year, there is
still some portion of fuel in the tank that is 21 years old. This bothers
me a little bit, but it keeps working. We did throw a jug of biocide in
one year with the fresh fuel.
Having said that, we have a service guy come in twice a year to check
fluids and change filters, and they get exercised 30 minutes a week just to
make sure they will run when we need them.
Do like the others have said: check filters, check a fuel sample from the
tank, and let us know what you find.
There exist people who do fuel polishing - they come to your large ship or
tank farm and run an extra fuel cleaning and refreshing for your stored
diesel fuel. Might be a bit of overkill on the farm.
Jeff Scarbrough
Corrosion Acres, Ga.
On Fri, Apr 24, 2020 at 7:46 AM eric--- via Shop-talk <
shop-talk@autox.team.net> wrote:
> Does anyone know of a way to tell if diesel fuel has gone bad?
>
> Here is my situation. I have a large diesel fuel tank for my tractors on
> my property (so I don't have to buy 'over the road' diesel.) The fuel in
> there has been there a few years.
>
> My newest tractor (a small 25hp subcompact) started acting funny. At full
> throttle, it seems to sputter a little.
>
> Could be a fuel problem, but I would love to test the diesel somehow. Or
> is there a way of looking at the filter on the tractor? Or another test to
> do?
>
> Related follow up, if the fuel is bad, and I have about 50 gals in a 250
> tank. Can I just add fresh fuel to it, or do I need to drain out all the
> bad first? What would be a good bad/good ratio to dilute the bad fuel?
>
> Thanks!
>
>
> "Be as beneficent as the sun or the sea, but if your rights as a rational
> being are trenched on, die on the first inch of your territory." Ralph
> Waldo Emerson
> -Who is John Galt?_______________________________________________
>
> Shop-talk@autox.team.net
> Donate: http://www.team.net/donate.html
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Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr"><div dir=3D"ltr"><br></div>We have two 500kW generators at=
work.=C2=A0 Each has a 1400 gallon tank; we go through about 500-800 gallo=
ns per year.=C2=A0 I expect that, despite the fact that these generators ar=
e having their=C2=A021st birthday this=C2=A0year, there is still some porti=
on of fuel in the tank that is 21 years old.=C2=A0 This bothers me a little=
bit, but it keeps working.=C2=A0 We did throw a jug of biocide in one year=
with the fresh fuel.<div><br></div><div>Having said that, we have a servic=
e guy come in twice a year to check fluids and change filters, and they get=
exercised 30 minutes a week just to make sure they will run when we need t=
hem.=C2=A0=C2=A0</div><div><br></div><div>Do like the others=C2=A0have said=
:=C2=A0 check filters, check a fuel sample from the tank, and let us know w=
hat you find.<br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail=
_attr"><br></div><div class=3D"gmail_attr">There exist people who do fuel p=
olishing - they come to your large ship or tank farm and run an extra fuel =
cleaning and refreshing for your stored diesel fuel.=C2=A0 Might be a bit o=
f overkill on the farm.</div><div class=3D"gmail_attr"><br></div><div class=
=3D"gmail_attr">Jeff Scarbrough</div><div class=3D"gmail_attr">Corrosion Ac=
res, Ga.</div><div dir=3D"ltr" class=3D"gmail_attr"><br></div><div dir=3D"l=
tr" class=3D"gmail_attr">On Fri, Apr 24, 2020 at 7:46 AM eric--- via Shop-t=
alk <<a href=3D"mailto:shop-talk@autox.team.net";>shop-talk@autox.team.ne=
t</a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin=
:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"=
><font size=3D"2" face=3D"sans-serif">Does anyone know of a way to tell if =
diesel
fuel has gone bad?</font>
<br>
<br><font size=3D"2" face=3D"sans-serif">Here is my situation.=C2=A0 I have=
a
large diesel fuel tank for my tractors on my property (so I don't have
to buy 'over the road' diesel.) =C2=A0The fuel in there has been th=
ere
a few years.</font>
<br>
<br><font size=3D"2" face=3D"sans-serif">My newest tractor (a small 25hp su=
bcompact)
started acting funny.=C2=A0 At full throttle, it seems to sputter a little.=
</font>
<br>
<br><font size=3D"2" face=3D"sans-serif">Could be a fuel problem, but I wou=
ld
love to test the diesel somehow. Or is there a way of looking at the filter
on the tractor? Or another test to do?</font>
<br>
<br><font size=3D"2" face=3D"sans-serif">Related follow up, if the fuel is =
bad,
and I have about 50 gals in a 250 tank.=C2=A0 Can I just add fresh fuel
to it, or do I need to drain out all the bad first?=C2=A0 What would be
a good bad/good ratio to dilute the bad fuel?</font>
<br>
<br><font size=3D"2" face=3D"sans-serif">Thanks!</font>
<br><font size=3D"2" face=3D"sans-serif"><br>
<br>
"Be as beneficent as the sun or the sea, but if your rights as a ratio=
nal
being are trenched on, die on the first inch of your territory." Ralph
Waldo Emerson <br>
-Who is John Galt?</font>_______________________________________________<br=
>
<br>
<a href=3D"mailto:Shop-talk@autox.team.net"; target=3D"_blank">Shop-talk@aut=
ox.team.net</a><br>
et=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://www.team.net/pipermail/shop-talk"; rel=3D"norefer=
rer" target=3D"_blank">http://www.team.net/pipermail/shop-talk</a> <a href=
=3D"http://autox.team.net/archive"; rel=3D"noreferrer" target=3D"_blank">htt=
p://autox.team.net/archive</a><br>
<br>
alk/fishplate@gmail.com" rel=3D"noreferrer" target=3D"_blank">http://autox.=
team.net/mailman/options/shop-talk/fishplate@gmail.com</a><br>
<br>
</blockquote></div></div></div>
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