IMHO, IF SAC kept some B-52's in reserve, there would also be some AGM-86 ALCM's held back. A BUFF can carry 20 of these things. There were 1700+ produced by 1986.
http://en.wikipedia.org/wiki/AGM-86_ALCM
Plus, IIRC, B52 crews had practiced low level flight for some time by T2K. I would also think that some KC-135's would have been kept in reserve to serve the BUFF's.
This combination should overcome the problem with alcohol or "bio-fuel".
I can also see ANY refinery that Mil-Gov gets its' hands on will be producing jet fuel to keep the BUFF's full tanks.
My $0.02
Mike