On Fri, 7 Sep 2018 02:31:15 +0000, Mike_Duffy
wrote:

On Thu, 6 Sep 2018 21:24:12 -0500, dpb wrote:

Even w/ new I'd dilute it 10:1 or greater to get rid of it.

On a sort of related note, does anyone know what should be done with a few
tankfuls of fuel oil which have been mixed with 2-stroke oil?

(During the last few years before my Dad was 'put into' a home, he made a
few such mistakes.)
just burn it.50:1 2 stroke oil in fuel oil (furnace or diesel) isn't
going to hurt anything