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Old 10 March 2006, 16:35   #1
Country: UK - Wales
Town: Wrexham. North Wales
Boat name: FOG DUCKER
Length: 5m +
Engine: Suzuki
Join Date: Sep 2005
Posts: 85
sell by date of petrol

Hi all,
Any one know how long petrol will last in jerry cans? as I have a couple of cans, thats about 8 months old, I know it goes stale, but do you think it will it be OK to use in the next few days? How could I tell if it's gone stale?

BOG RAT is offline   Reply With Quote
Old 10 March 2006, 16:40   #2
Country: UK - Wales
Town: swansea
Boat name: Too Blue
Length: 8m +
Engine: Suzuki DT225
Join Date: Mar 2004
Posts: 12,791
Been discussed before - do a search.

A lot depends on how well the cans are sealed - if you open them and there is just a slight hiss then no problem at all. Think of it like a bottle of pop!!!

Having said that my petrol genny is about 3 years old - have hardly used it but still starts first time and runs perfectly on it's original dose of fuel.

If you are really worried just use it a bit at a time - say 1 jerry can to 3 fresh.

codprawn is offline   Reply With Quote
Old 10 March 2006, 17:18   #3
Country: UK - Wales
Town: West Wales
Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
Join Date: Sep 2005
Posts: 6,298
Or use it up a bit at a time in the car, if it's petrol - not so bad if the car packs up on you
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Old 10 March 2006, 18:22   #4
Country: UK - England
Boat name: Mr Blue Sky
Make: Ribcraft
Length: 5m +
Engine: E-Tec 90
Join Date: Sep 2005
Posts: 98
They say top your tanks up over the six month winter lay-up to stop condensation forming on the inside of the tank, but also say petrol goes off after six months - you can't win.
Lawrence is offline   Reply With Quote
Old 10 March 2006, 19:47   #5
Country: USA
Town: Anchorage
Boat name: Trojan
Make: Zodiac Hurricane 590
Length: 5m +
Engine: Twin Yamaha 70's
Join Date: Mar 2006
Posts: 72

Look for a product called stabil, it will greatly improve the shelf life of stored fuel, and I have even got it to bring bad gas back to life in a snowmachine. Alaskans swear by it, well, that and duct tape. However, check the fuel color, if it is yellowish I wouldn't put it through an outboard, best be mowing the lawn with it.

Jimmy_Beam is offline   Reply With Quote
Old 11 March 2006, 18:32   #6
Country: UK - England
Town: cornwall
Boat name: nothing
Make: rib eye 430
Length: 4m +
Engine: tatsu 50
MMSI: 666
Join Date: Mar 2006
Posts: 1,914
Have just got rid of a can of old petrol ( put it in the transit along with a diesel fill up ) Smell the fuel compared to new fuel it will smell different if its going off , hard to describe the smell but not as fresh and less potent if that makes sense .
I would mix it in with fresh and burn it in the car , even in a diesel a gallon in a tank full is ok

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