Old petrol ?

[Tremlett 15]

I have 10 gals of unleaded petrol with oil mixed ( 50:1 ) its 12 months old, is it ok to still use in a outboard ( Merc 500 50hp 1976 ) ?

or/and is it ok to mix it say 50/50 with new mixed petrol ?

[PerformanceDodge]

Originally Posted by Tremlett 15

I have 10 gals of unleaded petrol with oil mixed ( 50:1 ) its 12 months old, is it ok to still use in a outboard ( Merc 500 50hp 1976 ) ?

or/and is it ok to mix it say 50/50 with new mixed petrol ?

There is a link hear as to why petrol goes stale.

http://www.straightdope.com/columns/...ale-so-quickly

http://blogs.myspace.com/index.cfm?f...ogId=467264424

Although it's 50 quids worth of fuel if it knackers your engine its probably not worth the risk as it could cost a lot more to repair IMHO

[Catweazle]

I have about 200 galls of diesel in my boat ,fibre glass tanks,been stood for 18 months,was hoping to use it for the 50th end of august.Any nastys i should look out for apart from the bug. Is there a test to show up anything lurking,would it be best to have it run through the cleaner.cheers CW,

[Jonnyboy]

Originally Posted by Catweazle

I have about 200 galls of diesel in my boat ,fibre glass tanks,been stood for 18 months,was hoping to use it for the 50th end of august.Any nastys i should look out for apart from the bug. Is there a test to show up anything lurking,would it be best to have it run through the cleaner.cheers CW,

Treat with Fuel-Set, mix 4:1 you will not have a problem. Try and remove any water from the bottom the tank before adding & blending the Fuel-Set

[Catweazle]

Originally Posted by Jonnyboy

Treat with Fuel-Set, mix 4:1 you will not have a problem. Try and remove any water from the bottom the tank before adding & blending the Fuel-Set

You gave me a fright there Johnyboy 4to 1 checked it out at 400to 1 thats better.Will check bottom layer this wk end as the nelson has hand pumps to take samples from the bottom of tanks.Never suffered bug problem but probably not stood as long since i have owned it.cheers cw.

[Jonnyboy]

Originally Posted by Catweazle

You gave me a fright there Johnyboy 4to 1 checked it out at 400to 1 thats better.Will check bottom layer this wk end as the nelson has hand pumps to take samples from the bottom of tanks.Never suffered bug problem but probably not stood as long since i have owned it.cheers cw.

lol, been working away so not been able to post. it is actually 4000;1 so you will only need 250 ml. If there is no water in the tank then there wont be any bugs. (It is a water born algae)

[Catweazle]

Originally Posted by Jonnyboy

lol, been working away so not been able to post. it is actually 4000;1 so you will only need 250 ml. If there is no water in the tank then there wont be any bugs. (It is a water born algae)

Looks like i need to change my glasses as well lol.i know your suposed to put it in before topping up to mix it ,as we are allredy full up do you think if you put it in before going out anfd throw it about a bit it should be ok

[Jonnyboy]

Ideally you should put in before refueling, but if you can get hold of a small pump put the juice in and pump the fuel round this will blend nicely but only if you find water in the tank (no water no bug) You can use it as a fuel conditioner like any fuel treatment but if it aint broke leave it alone

[Catweazle]

Ok many thanks.went down today and i think i should be more worried about woodworm than diesel bug.old girl suffered a bit over the last year of neglect.
Still we will have to get our finger out for the 50th at Cowes.CW.