2 stroke O/B oil -use by?

[andrewbartlett]

Does any one know how long one can use this mixer oil from a screw top bottle. Does it go off ?

 

[VicS]

I had some "go off" once.

It was only a small quantity left in a bottle for sometime ( ie not just from one year to the next.)

It went all "gloopy" and would not mix with the petrol. It took ages to filter out again cos it kept blocking the gauze filter in the funnel.

It may have been the cause of trouble I had previously with a blocked carb jet on the one occasion I did not filter some old fuel mix before using it.


Never had any trouble since even with oil that is probably several years old.

 

[andrewbartlett]

Thanks Vics thats good to hear as I have several bottles from prior years.I have normally bought new each year but now we are on an economic war footing I shall try to use up the old bottles (knowing my luck my austerity will be torpedoed with an expensive bill for de-clogging the engine) !!.

 

[duncan99210]

The bottles probably have 'best before' date on them. We bought a bottle before we left Uk and it lasted about 2 1/2 years before it ran out without causing any problems.

 

[LadyInBed]

My 10+ year old bottle is just running out.
100:1 mix, mix 3 ltrs at a time, O/B always starts 2nd or 3rd pull from cold, even after a month with no use.
So I would say that it has a long shelf life.

 

[VicS]

So I would say that it has a long shelf life.

I'd expect so.
I have no explanation of the trouble I had .. I dont remember what brand it was. I used various but now usually Quicksilver.