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The Pub For General Automotive Related Talk |
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#1 | ||
FF.Com.Au Hardcore
Join Date: Mar 2013
Posts: 7,626
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What are people's thoughts/advise on fuel levels in vehicles being stored for long periods? This is referring to both older (steel tank) and new plastic tank vehicles.
From what I have heard there are pro's and cons to both scenarios of leaving fuel in tank or leaving it almost empty when storing vehicles for longer periods. Leaving tank full of fuel stops condensation/water from building up in the tanks and corroding fuel senders and pumps but running the risk of fuel going stale/turning jelly or even becoming like black carbon when it goes off. Leaving tank almost empty reduces the risk of fuel going off, but then the risk of condensation/water building up inside the tank can cause other issues like corroding fuel pumps/senders etc. Seems to be a bit of a loose loose situation. Thoughts.. |
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#2 | ||
Experienced Member
Join Date: Sep 2006
Location: Australasia
Posts: 7,530
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When I stored my last project vehicle, I just added a fuel stabiliser to stop the fuel going off.
Since it was stored in the garage there was little temperature variation to cause condensation, usually I leave about quarter of tank of fuel in it. Never had any issues as I'm aware of. PS: If it was really long term I would remove tank and empty it. |
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#4 | ||
FF.Com.Au Hardcore
Join Date: Feb 2005
Posts: 5,040
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How long is long? Auto-oxidation of fuel in the absence of light. heat, or a catalyst, is slow. The fuel is still good after 6 months.
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#5 | ||
FF.Com.Au Hardcore
Join Date: Mar 2013
Posts: 7,626
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#6 | ||
Hoon On The Rise
![]() Join Date: Mar 2005
Location: Open Roads with Boost!
Posts: 9,924
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If storing full of fuel then add penrite fuel stabilizer prior to filling & storing.
If storing empty then simply add methylated spirits before filling or starting. Remember the methylated spirits will absorb water from the atmosphere or the tank so either way (storing full or empty) you're up for the potential rust complication. If older (carburetor) vehicle blend two stroke mix into the fuel system and start it to act as lubricant & sealant for all steel parts, rubbers etc. It also won't hurt to take out the plugs and put a little spray two stroke mix down the chambers, then put the plugs back in. Will help keep everything lubricated and prevent seizing (long term).
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#7 | ||
RS The Faster Fords
![]() Join Date: Feb 2014
Location: Westralia
Posts: 1,691
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I'd fill it up for storage. After that period of time though I'd be looking at replacing all of the other fluids in the car so you may aswell add fuel to the list.
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#8 | ||
Experienced Member
Join Date: Sep 2006
Location: Australasia
Posts: 7,530
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#9 | ||
FF.Com.Au Hardcore
Join Date: Mar 2013
Posts: 7,626
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#10 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 21,782
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In that case, fill the tank, add the stabiliser, run it so the additives are right through the system, shut down and you’re done. If the time away ticks past three years, suggest drop the fuel and repeat.
Ten years old fuel still burns, it’s just a bit gutless. ![]() |
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#11 | ||
Experienced Member
Join Date: Sep 2006
Location: Australasia
Posts: 7,530
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#12 | |||
FF.Com.Au Hardcore
Join Date: Jul 2012
Posts: 3,878
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Quote:
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#13 | |||
BANNED
Join Date: Jul 2012
Posts: 2,886
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Quote:
In a modern car the fuel system is a sealed closed loop. I wouldn't worry about condensation.
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#14 | ||
FF.Com.Au Hardcore
Join Date: Jan 2005
Location: Wollongong
Posts: 3,111
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i stored my BA GT for 5 years bu ti started it each month and i put 10l of fuel in every 6 months or so, i heard that if you ad 5l of fuel to 5l of old fuel it will negate the effects of stale fuel, anyway after i got it registered i ran the old fuel and it was fine.
i also bought a car (HX holden) that was left for 20 years, the fuel smelt like varnish and the tank was rusty as... needed a complete fuel system recondition i do leave fuel in my bike that i hardly use and i have learnt don't use 98 ron, its got too many additives and they gum up the carbs when it evaporates.. 91 ron only for leaving in bikes or small engines
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