We've has SO MANY discussions over the years about which parts would wear out, which would have to be modified or regularly replaced if we went with canon T2K's reliance on alcohol as a fuel, what tends to fail as a result of wear and tear or battle damage. In terms of tracked military vehicles, it seems to me as a result of this discussion that a lack of spare, low-wear track components would be the biggest killer of MBTs and IFVs by far.
__________________
 "It is better to be feared than loved" - Nicolo Machiavelli
|