The only film you really need to worry about expiring is color, and even more so, slide film.
B+W does change with time and bad storage, but not nearly as much as people sometimes think. I've been eating away at a brick of delta 100 that is about 6 years old, and has never once been refridgerated since purchase....it's also crossed the atlantic 4 times, and was left in an overheated car in a hot Polish summer for about 2 days.
And yet, it's still churning out good pic's. Maybe a little grainier than usual, maybe a little less density, but nothing an extra added push can't fix.
Shoot, a friend of mine inherited his grandfather's Nikon F and lenses, along with 3 bulk rolls of tri-x from god knows what decade. It's absolutely fine, but maybe not as precise as a fresh film. Although I remember the first few rolls had the silver sluff off in developing, but after that all was fine.