Looking to upgrade maybe...

[drstephennix]

I may sell my '06 this year and upgrade again. If I do, it will either be a 6.4 or 6.7. Problem is, I don't know much about the pros or cons of each engine. Of course, I want as new as I can afford, but don't want to get into something I'll be pumping repair money into. What are some pros and cons of the 6.7? And are there better year models to look at where they fixed some issues from previous years?

[ucpa111]

Many happy 6.7 owners on here...and I am one of them. If you wanted to tune, find a good 6.4 and tune it. From what I understand...it will be a monster. But, it will be an older monster with associated age issues that can arise.

I think Ford got this engine right. I am averaging over 16 MPG over the course of my 12,000 miles (hand calculated and graphed)(SRW-CC-LB). Best MPG is 18.8. Worst will likely be this tank with extended idling and nothing more than a 7 miles driven after each start....~13.5. Not bad for a truck this size. I feel it runs very well in stock form. I can't imagine what will really slow it down. AND..6 speed transmission that I feel yields big benefits over 4 or 5 speeds.

Interior is great on these 2011 and up. I have zero rattles.

If you expect a lot out of the engine brake you'll be disappointed. Probably something they could have made stronger. If you compare to Cummins...you will want more. Not an issue for 95% of us. And, some folks pulling 5ers have been happy with it knowing it will hold you back but not slow you down necessarily.

Good luck in your decision. I am sure others will chime in.

[drstephennix]

So you're saying the 6.7 doesn't need a tuner? Great info by the way. Those mpg's are what I'm getting out of my 6.0

[ucpa111]

Need is like that feeling in the seat of your pants....do you need to feel more than what stock offers? I encourage you to drive one. I think you'll like it.

If you tune and delete (if you can find one)...you'll gain MPGs from what I read.

You're getting some good MPG's out of the 6.0.

[fosterelli]

I'm at 11K miles on my 6.7L and I love it. No tune or delete, pulled 17.7mpg round trip Houston to New Orleans and back...mostly 75-80 mph, unloaded. I've averaged 16.7mpg for the life of my rig so far...with lots of idle and short trips around town, intermittent hauling of oil drums or totes. Problem free, love this truck more than anything I've ever owned.

[DAT]

42000+ On the truck and I love it. No tune or delete, pulled 18.2 before adding new tires. Now getting 17.1.

[drstephennix]

Thanks alot guys! keep the info coming. Does this truck have the dpf and regen system as well? Also, does it have the DEF system?

[Bigtwinharley]

Originally Posted by drstephennix

Thanks alot guys! keep the info coming. Does this truck have the dpf and regen system as well? Also, does it have the DEF system?

Yes to all your questions

[drstephennix]

Originally Posted by Bigtwinharley

Yes to all your questions

Should the dpf and regen be deleted on these as well like the 6.4?