If you have an extra vehicle nothing. Drive the extra while the other is down and waiting on parts and service.
That might be in some 3rd world country where everyone still smokes. The number of smokers have gone down and like anything, tobacco also ages so it starts to degrade. Shelf life is rated at about 2 years. When did this ever come in handy in a crisis in the US where regular dollar bills wouldn't have worked?Several years ago I read in a publication that the truly smart people who prepare for crises will purchase a carton of cigarettes even if they do not smoke. That way when the time comes, they will be able to barter for just about anything and everything they might need after a crisis.
I think you're getting into hoarding there as others mentioned. I wouldn't stock any parts you're not going to use in the next couple years so things like oil filters/transmission fluids/filters, wiper blades, cabin filters would be fine to stock. But why have an alternator or starter on the shelf if you might never need it? Also some parts only have a one or two year warranty. It would be bad to stock up on something only to find out 2 years later there was something wrong with it and no longer in warranty.ASSUMING we can get fuel in the future what should we stock up on? Certainly can't keep every part.
Thoughts?