Oil shelf life.

[Holmsey]

Sorting out my shed yesterday I have found 4 half empty 5lt containers. ...
They have bben in there for at least 4 years ..... is it worth keeping or recycling.

Rich

[grumps]

Why not keep? If in sealed containers there will be minimal moisture that the oil can have absorbed. I'd use it.

Been in the ground for millions of years after all

The purists will be along soon.........

[Rusty Nuts]

"....Half empty...."
Don't think it's particularly hygroscopic, but if it can put up with being thrashed round an engine for a few thousand miles, and if the lids are on to keep stuff out, I'd happily test it in your bike.

[Rich:-)]

I'd use it as long as it's not cloudy and has no wax separation (not a an issue for fully synth).

[In me shed]

I'm an optimist so mine are 1/2 full, but I tend to use it to flush out the old oil.

[Hugh Mungus]

If you don't want to use it in your engine you could keep it for general lubing... Chain etc
Having 4 half empty/full oil cans is really bad management 

[Holmsey]

@ Hugh Mungus. .... They are all different grades as I used to service my kids cars ..