Have your wife roll into a gas station; even the wackos in the NoSelfPump
state can probably pull the stick and check it...my guess is that it's bone
freakin dry and needs at least 2 qts of synthetic, which the station may
or may not have, and they will rip her on price.

But, it gets her home.

If it is the crankvent/oil reg situ, she may not get home...
Good Luck.