[diaconcrete]

I have an 08 F450 that tows my bobcat T250. 1st engine blew (bent rods, cranshaft, etc.) at 16,000 miles. 2 weeks later a whole new engine. At 36,000 miles the 2nd engine blows (same problem as above with 4 cylinders.) 2.5 weeks later I have a new engine. Everytime they have had to shut down the assembly line to get the engine. Last night at 46,000 miles the engine blows again and the torque puts hairline cracks in the windshield. Now it needs it's 4th engine in it's life and has only 46,000 miles on it. When should I finally give up and lemon this damn thing?