Shelf life for 3m Super Duty?

[Grady678]

Gallon that's 3 years old and used only 25%......does this stuff break down? thx!

[mikeg2]

If you are asking about compound,my bottle dried out at 3 years and was mostly solid with some oil on top.Wouldn't take a chance using the grit with little fluid and bought a quart for this year.

[Grady678]

Didn't dry up at all, however, the liquid separates and needs to be stirred. My guess is it's still good until it chunks up.......anyone? Bueller....