How do i check whether there is oil in my fuel?

[fishinwahbee]

Just wondering how do i check whether i put oil in my 10litres of fuel. Is there away or is it not worth risking. The fuel is premium and has been sitting there for about 1 month. How long would this fuel last? My motor is broken and i dont want the fuel to go to waste. Probably use it with my mates motor or relatives if it was ok.

[Gazza]

put a couple of mms deep on e.g. plate
let it evaporate out of the wind.... in the (outdoors) sun preferrably ,shade just takes longer
IF plate is "greasy to the touch" the residue left is oil. IF dry , no oil ;)

p.s. month or 2's o.k.

[Roughasguts]

For one the colour should bea purple tint in it.
Then if you spill a bit there will be a oil residue left behind when the fuel evaporates.

Cheers.

[Spaniard_King]

If you cant tell or doubt the actual content just add another 200ml of oil and use it double oil wont hurt it... no oil will