If I were in the same Situation as the movie in 1885 I could have gotten Back to the Future in 10 minutes.

Rating: 10/10 (16 September 2005)

OK... First I know that this was/is a movie and my plan would end the move in 30 minutes, but this is what I would do let me know if you agree...
Gas tank in the car Marty drove to 1885 from 1955 has a full tank. Doc filled it in 1955. Gas line gets ripped all gas runs out.
Doc - Patch the gas line. DO NOT use whiskey as fuel. In 1885 at that point there are 2 time machines there. The one Marty drove from 1955 and the one Doc put in the mine in 1885. That 1885 car should still have gas in it unless Doc drained it before putting it into storage.
Get gas out of that car and drive back to the future...
Another thing. Doc can build an Ice maker, but can't refine Oil into some form of gas? They had oil back then.