blue smoke means oil in exhaust. could be a blown oil seal.
Id call lemon and have them buy it back.... if you care about status, and NEED something new-er, go with a Dmax (not the 07-08 junk), or CR cummins.
If you dont need something new, and you just need it to haul, get a dodge W350 or 3500 with a 12V. ittl be cheaper in the long run
Or an old 7 3
But, if you like your ford (who dont).... Get an extended warranty.