'01 is a good year. Is it auto or standard? if it's standard the six speed option was better, if it's auto it's a decent transmission but it does wander alot right at around 35mph also if it's the origanal one it may need replacing shortly. also look on the drivers door casing and see where it was made. if it was made in mexico it's fine, if us or canada look on the block and make sure it doesn't have "53" cast on it. also if you buy it get a fuel pressure warning light or gauge so you know when to replace your lift pump before your injector pump goes. These are great work trucks that will last forever if you know what to look for.I came across a 01' Dodge 2500 cummins diesel,5speed, regular cab, with 116,345 miles on it. Is the 01' a good problem free year, and what kind of fuel mileage should i expect out of it?