To store empty or topped up?

For low use disels, at what level do you store fuel in your tanks?

  • I only use pure petroleum diesel so I don't have a horse in this race.

  • I use bio diesel so I choose to store empty

  • I use biodiesel so I choose to store full

  • I don't care, I just add a biocide and get on with it

  • other??


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MapleLeafFarmer

Well-known member

Equipment
Lots incl. B and L kubotas
Dec 2, 2019
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The old farmers club meets at sunrise daily over pie and coffee at the local diner. Today's argument was whether to store our INFREQUENTLY used diesels with tanks full or empty?

When diesel was 100% petroleum based we all agreed we stored full with the idea of seasonally appropriate in the back of our mind. No one seemed to worried about bio-contamination, diesel mushrooms in our tanks, the green snot of death in our filters, etc...

However today i would say about 50/50 on whether to store empty or full. kinda got heated with no clear winner. All at the table have farmed for over say 50 years and all get fuel delivered bulk.

The full side argued it helps keep moisture out.
The store empty side argued harder to keep seasonally appropriate, given bio-diesel can go bad in as short as 14 days says some stuff on internet (more like 2 months OK IMHO) depending on humidity level of surrounding area it keeps fuel fresher as it doesn't sit as long with fresh added before each run, that most of us store inside sheds, etc...

So half argued store full, other half argued store as empty as possible. All agreed microbial limiting additives have become the norm. Regardless.


What say you?
 

Dustball

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2016 B2650HSDC
Sep 15, 2023
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Hudson, WI
I don't use biodiesel but I'm in the camp of keep the fuel tanks as full as possible to minimize exposed surface area in the tank for condensation to form on. I'm in a climate of temperature extremes so the constant warming and cooling can generate quite a bit of condensation.
 
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