What Happened
We turned 12k miles in our 05 F-350, V-10 sometime in Jan. The best Average MPG we ever got towing was 8.2/8.3. We did 8.3 on our trip down to Havasu City from Ohio. On the trip down to Quartzsite yesterday @ 80 miles on 95 South,,not exactly a level road, some fair grades ..we did 10.3 the best "average " towing ever. I thought "what"..well towing down to Apache Junction we did 10.2mpg..Hummm.. It is like something snapped when it turned 12K miles. I had been told the V-10 needed 12/15K miles to break in but never put much stock in it.We never checked the MPG while in Havasu city for 6 weeks.Now what??? more to consider if buying the diesel.Anyone with the V-10 have that experience???
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