[Gargamel]

I didn't see the OP was referring to a single mission!

I'd have to think that resupply and refueling shouldn't even be an issue for single missions, as they are scripted to be shorter encounter's. I can see somebody scripting one with the intent of being an endurance mission, but then refueling would be negate the point of the exercise.

EDIT:

AHHA! Again missed the second half of the second post, thought it was all spanish.

As mentioned above, you have to end a mission to use a milk cow. Just pulling alongside of one does nothing. The milkcows would only be usable in a campaign setting.

Attempt at Spanish: Como mencionado anteriormente, usted tiene que terminar una misión de usar a una vaca de leche. Sólo tiramiento al lado uno no hace nada. Las vacas lecheras sólo serían utilizables en un ajuste de campaña.