1994 or older: indirect injection 6.9 or 7.3, fair cold starter. My 92 struggled below ~15 degrees.1994-2003: 7.3 PowerStroke, good cold starter UNLESS the glow plugs/controller are FUBAR'd or the rings are going (think: 300,000+ miles).2003.5-later: 6.0 PSD, all-around crap.