Did I put oil in the two stroke petrol?

[Fantasie 19]

Petrol usually looks different once the oil is added.

+1 I use Yamlube & the latest one has purple dye, the old bottle had green dye....

 

[CJU]

If you put a teaspoon of suspected 2 stroke mix and one of known neat petrol onto a single sheet of newspaper and wait a few minutes till they evaporate. The oily fuel leaves a dark stain while the neat fuel leaves none.
This test is also useful for checking for water in the petrol, the petrol is absorbed into the paper and the water stays on the surface as globules.

 

[VicMallows]

I have found the 2 stroke 50:1 fuel from the last season, put in the car that Autumn, gives me quite a few ' free ' miles without hiccups to the injectors or catalytic converter, though I might not fill the whole tank with the stuff.

I have always found that the 2 stroke 50:1 from last season, or even the season before, works perfectly well in the outboard; the strimmer; or anything else 2 stroke Nothing particularly special about the way I store the fuel. Might it be more to do with how engines are put to bed for the winter?

 

[Lakesailor]

Do you store it out of the daylight, or in metal cans?
It seems light is what does for fuel.

 

[planteater]

If you put a teaspoon of suspected 2 stroke mix and one of known neat petrol onto a single sheet of newspaper and wait a few minutes till they evaporate. The oily fuel leaves a dark stain while the neat fuel leaves none.
This test is also useful for checking for water in the petrol, the petrol is absorbed into the paper and the water stays on the surface as globules.

Top tip! I recently had the same problem. In the end I burned the suspect petrol in my car, mixing in one litre every time I filled up.

 

[l'escargot]

Top tip! I recently had the same problem. In the end I burned the suspect petrol in my car, mixing in one litre every time I filled up.

Buy an old Lada - I had one some years ago and all my old 2 stroke and suspect petrol went into it, by the gallon, and it never missed a beat...

 

[VicMallows]

Do you store it out of the daylight, or in metal cans?
It seems light is what does for fuel.

Yes, in either metal or very dense dark plastic in a cool very dark shed

 

[Seajet]

Yes, in either metal or very dense dark plastic in a cool very dark shed

We store our lawnmower fuel ( standard unleaded, some neat 4 stroke and some 2 stroke mixed 50:1 ) in a dark garage but it still seemed dodgy in the Spring; I was told by a mechanic I trust that unleaded stuff goes jellified after 3 months or so.

I always use up the fuel in my boat or car ( the catalytic converter doesn't seem to mind ) in the Autumn now.

 

[Fantasie 19]

I was told by a mechanic I trust that unleaded stuff goes jellified after 3 months or so.

Yup - same advice I was given by my outboard service engineer... he has many years of experience so no reason to disbelieve him...

By the by, he also advised buying my fuel from one of the major players (Esso/Shell/BP etc) rather than the supermarket.. there's a reason it's cheaper he said...

 

[nigelmercier]

Buy an old Lada - I had one some years ago and all my old 2 stroke and suspect petrol went into it, by the gallon, and it never missed a beat...

I think I've discovered the ultimate way to dispose of 2-year-old yellowed petrol and random concentrations of 2-stroke.

Put it in the hire car. Don't know why I didn't think of this before.

 

[nimbusgb]

I think I've discovered the ultimate way to dispose of 2-year-old yellowed petrol and random concentrations of 2-stroke.

Put it in the hire car. Don't know why I didn't think of this before.

+1