Breakin period on 07 diesel engine

[Bruce and Jenna]

When I bought my 07 F350 PSD, mpg was not so good. Then at 200 hours it magically bumped up. Somehow I learned that at 200 hours, the computer ends a break in period and mileage improves.

Now I see another improvement...about 2 mpg! I just passed 600 hours. Anybody know anything about this?

[Bruce and Jenna]

When I bought my 07 F350 PSD, mpg was not so good. Then at 200 hours it magically bumped up. Somehow I learned that at 200 hours, the computer ends a break in period and mileage improves.

Now I see another improvement...about 2 mpg! I just passed 600 hours. Anybody know anything about this?

[Roam America]

i don't know about hours, but my 06 PSD started to improve about 10,000 miles. My 08 PSD was bad but has been getting better. I'll be hitting 10,000 miles soon so we'll see what happens.