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Old 19 October 2013, 07:10   #11
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If only 5 % ethanol, that stays OK in full tank for a reasonable long time.

The most extreme i have tested is 15 month old E5 premix fuel. I did mix it 50% with fresh stuff and had 10 micron filter, no issues at all. Not that i dear to recommend doing it .....


I used to winterize with Aspen fuel but was told that some gaskets might "shrink" so now i only run the system empty together with spraying fogging oil (I hav only 2 stroke carb engines) and so far it has worked fine.

E10 i don't touch, its not compatible for most old style engines and gets old very fast(hav heard).
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Old 24 January 2014, 07:21   #12
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Aspen fuel

Hi all,

I am Eddie the tech guy for Aspen fuels here in the ok. Please feel free to ask me questions.

I will only give out facts.

Kind regards

Eddie Bocquillon
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Old 24 January 2014, 12:08   #13
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Originally Posted by C-NUMB View Post
If only 5 % ethanol, that stays OK in full tank for a reasonable long time.

The most extreme i have tested is 15 month old E5 premix fuel. I did mix it 50% with fresh stuff and had 10 micron filter, no issues at all. Not that i dear to recommend doing it .....


I used to winterize with Aspen fuel but was told that some gaskets might "shrink" so now i only run the system empty together with spraying fogging oil (I hav only 2 stroke carb engines) and so far it has worked fine.

E10 i don't touch, its not compatible for most old style engines and gets old very fast(hav heard).
Hi, We have had some rubberised parts harden.

These are parts that would fail with the use of normal fuels.

Aspen can't damage anything!

What it will do is wash out the ethanol and solvents that have soaked into the rubber parts from the normal fuel. This can cause them the harden or contract.

It is very rare and these parts are in most cases service items and so cheap to replace if needed. We have sold many thousands of litres and I only know of 20 engines that have had this problem in the UK.

Kind regards

Eddie
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Old 24 January 2014, 13:55   #14
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Unleaded Fuel doesn't go stale quick these days.
My fuel tank always left connected to the engine
Just switch off, shut the bleed and leave it alone!
I run mine every 3 weeks either by using it at sea or on the hose, I find the best way to keep things tip top is to keep using them.
Simples! :-)

Also I used 3 year old fuel in an inboard v8 engine.
No problem at all!
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Old 24 January 2014, 16:56   #15
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Unleaded Fuel doesn't go stale quick these days.
Rubbish.
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Old 24 January 2014, 17:01   #16
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Rubbish.
Never had the problem myself with stale fuel since the 1980's.

Mind you I have noticed a huge difference in the quality of diesel at the pumps.
The car does 10mpg less from some garages.
I assume it's the same for unleaded.
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Old 25 January 2014, 03:21   #17
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Last time i used the boat was 2 weeks ago.
I filled it with fuel from jerry cans that are always about round here.
I just checked my receipts out if interest to see how old the fuel was (as I couldn't remember)

They were filled up 24th of May 2013! So the fuel was around 7 months old, no issues whatsoever.

Maybe i have just been lucky over the years but people are not wintering the boats for longer than this are they?
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Old 25 January 2014, 04:47   #18
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Last time i used the boat was 2 weeks ago.
I filled it with fuel from jerry cans that are always about round here.
I just checked my receipts out if interest to see how old the fuel was (as I couldn't remember)

They were filled up 24th of May 2013! So the fuel was around 7 months old, no issues whatsoever.

Maybe i have just been lucky over the years but people are not wintering the boats for longer than this are they?
Hi,

It seams you have been lucky. Unleaded fuel does "Go off" just check with any garden machinery dealer / Classic bike dealer. Fuel kept in sealed cans and large quantities seams to keep better. If you check with most engine manufactures they will say not to use fuel that is over 30 days old.

If an engine is multi cylinder or fuel injected it does not seam to affect them as much.

You can still get deposit build up and this will reduce the size of the jets in a carburettored engine and so give poor running.

Pump fuels have changed massively over the last few years and most now contain around 130 ingredients and are classed as TOXIC

Aspen fuel only has 10 ingredients and is only harmful.

Aspen has no ethanol. (just google ethanol damage)

No Solvents, This is what damages the rubber parts and causes pump fuel to evaporate so fast.

Aspen will stay in your tank for longer, with no deposit build up in your fuel system.

I hope the above has helped and makes sense.

Kind regards

Eddie
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Old 25 January 2014, 05:09   #19
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Thanks Eddie.

Apart from having no idea what 'Aspen' fuel is.

I still don't necessarily think its a problem like people say. More like the fuel companies trying to make people panic buy!

I have petrol strimners, mowers, chainsaws, cement mixer, concrete breaker etc etc.
Never drain them down of fuel and sometimes they sit for months or years.
Always start up ok.
(Mind you they probably won't now! ) :-)

However maybe the problem is coming back as they 'water down' the fuel with this bio stuff.
That doesn't do engines too much good either.
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Old 25 January 2014, 05:27   #20
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[QUOTE="paddlers;576799"]Simplest way for me is to put the outboard in a tank of freshwater . Run it until warm then disconnect the fuel line at the engine & let it tickover until it dies. I then assume the carbs are pretty empty.

In my opinion. Never disconnected the fuel line and leave a 2 stroke running!

Once the fuel supply is gone, the oil is gone causing excess wear and damage inside the engine.
It might only be for a few seconds but it will harm the engine each time!

There are drains on the carbs if you insist on draining it out!
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