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Old 18 April 2012, 02:02   #1
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Country: UK - England
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Keeping Fuel?...

I have a full 25 litre tank of 2 stroke fuel (for 1990 20HP Evinrude) which has been stored in my garage for around 3 months since I refilled... Should it be OK to use guys?

Thanks!
F
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Old 18 April 2012, 02:55   #2
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How old is your mariner?

I've used 3 year old premix on a '72 Johnson 25 in the past. Granted it behaved more like a 22 than a 25, but it still ran.

Your biggest problem will be if it's had water ingress, but having said that if the tank was full and the air vent closed that problem should be soooo small it will be negligible.
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Old 18 April 2012, 02:58   #3
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Weird nonsense with "back" buton......
repeat post deleted.
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Old 18 April 2012, 03:06   #4
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Quote:
Originally Posted by 9D280 View Post
How old is your mariner?
As stated mate - I've a 1990 Evinrude 20hp... same block as 35hp, restricted down to HP...

I've stored it in a locked garage, but slightly vented to ensure no build up of fuel gas pressure in warm weather...

hmnnn... dunno if I should get rid...
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Old 18 April 2012, 03:09   #5
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9D280 - now spotted & changed my old engine details on my profile..thanks !!
:-)
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Old 18 April 2012, 05:10   #6
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Three months is no problem IMV. The fuel in my tank sits there for 6 months out of season. It's fine the next season. The only time I've had problems with old fuel is getting my mower to start but that's probably 12 months old. Once started it's fine, but it doesn't like it.
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Old 18 April 2012, 05:13   #7
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i have left fuel in mine for over a year and it was fine.
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Old 18 April 2012, 06:07   #8
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It will be fine
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Old 18 April 2012, 07:39   #9
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RIBase
Yep do it every year for 5 months and its fine, don't worry
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Old 18 April 2012, 08:00   #10
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if its premixed just give it a good shake up other than that it will be fine.
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Old 18 April 2012, 08:06   #11
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DO NOT USE!!

Post it to me & I will dispose of it for you free of charge

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Old 19 April 2012, 02:59   #12
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Same here.

Last season's fuel and the engine starts second pull on the cord, and runs fine. But it's a good idea to run the engine dry before storage (take off the fuel line and run it until it stops) as I believe deposits can form in the carburettor/injection system if you don't.
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Old 19 April 2012, 03:15   #13
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speacking as some one who repaired obms before retiring , un-leaded petrol does go stale over time , and i allways used a stabalizer in the fuel to prolong its storage life, and i reckon if all the profesionall boat people on this site wrote in they have at sometime had problems with stale fuel,just thought i would throw that into the pot !
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