Scott Miller

Question: After Marty enters 1885, in his fleeing from the Indians, the DeLorean's fuel line gets ruptured and it loses all its gas. When Marty tells Doc this, Doc says gasoline doesn't even exist yet. However, Doc's DeLorean, which is now hidden in a cave, has its own gas supply in its gas tank and will not need it anymore, as 1955 Doc would just refill it after getting it out of the cave. Why didn't Doc siphon the gas from his DeLorean, and refill Marty's? He said the only problem at that moment was no gas. Not that he could not patch the fuel line, which would have been easy.

Scott Miller

Chosen answer: We don't know how much gas was in the De Lorean when it got struck by lightning - Doc may not have bothered to top-up regularly as he was using the anti-gravity (powered by Mr Fusion) a lot, and also Biff had used the car and may have used up some fuel. As Doc was putting it in storage, he would have drained the fuel before putting it in the mine to prevent damage (and 1955 Doc implies the tank was empty and that he filled it up) He also may have been reluctant to tamper with the car in the 1880s as it could have been damaged or destroyed (by a mine collapse), thus leaving him stranded in the 1880s and Marty in the 1950s with no time machine.

Sierra1 Premium member

Answer: When putting any vehicle into storage for a long time, fluids must be drained from the vehicle. 1985 Doc most likely did this after being sent to 1885.

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