worst dieael yet by ford...fuel economy sucks also..you can add a tuner to make it better but wont last over 100k and will blow up...

cummins first then duramax..

Really???? go set up a lawn chair along side any interstate and tally up the number of dodge, chevy and ford trucks pulling big loads for a living and get back to us...I'll save you some time and let you know that the answer is DODGE. Granted they have made some duds in years past, but for the last 10+ years they have an over all package that is hands down above the rest.

Also...go raise the hood on 99% of the big rigs on the road today and count the number of cylinders under the hood....there is a reason behind all this ....

+1000

6.0 could be made right with some help...6.4 = time bomb/money pit

i just had my friends 04 in my shop yesterday to replace a rotted a/c dryer and a recharge..i should have takin a picture of his odometer,405615 miles and never been touched including the injectors,,changes his diesel filters(i installed a racor one also) and it just keeps going..

little Bro has a 6.0 with blown head gasket(s)...now trying to decide whether to: 1)do a cummins conversion into Ford, 2)rebuild 6.0 with better studs/gaskets, egr delete etc, or 3)trade/sell and replace with a Dodge.....

He also has an 03 7.3...still pulls/runs like new with 250k...last of the decent Fords....

Back to OP....Stay away form the 6.4!

I have an early 2008 F-450 4x4 King Ranch. I bought it new back in Apr of 2007. I love mine. As long as it continues to behave I'll hang onto it. I have had issues with it though. All cooling system issues, and all issues were fixed under warranty (no more warranty now though). Radiator was replaced at one year. At two years, radiator and entire cooling system was replaced. At three years, same deal - radiator and entire cooling system. On that third time I was looking at lemon-laws.... But didn't have the time to deal with it. But, for the past two years, not a single problem. Never had any motor problems. Now that it's broken in good, I'm up to about a whopping 12mpg! Started off averaging 7-8, but it has been steadily going up over the past couple of years. I'm at 77K miles now. And, it has the badass 4.88 rear end - part of my fuel mileage problem. But tows awesome which is why I bought it.

Dodge has by far & away the most reliable engine.... But lets keep it real all you guys goin on & on about the motor forgot to mention the rest of the truck around the engine!!!

My friend is head diesel tech at our local ford shop. I called him couple weeks ago about an 08 f450 with real low mileage he said dont buy anything with the 6.4. I listened

And the kicker with 450 and 550 trucks is that they are commercial vehicles...lemon law does not apply. A friend had an 08 450...he literally drove a loaner more than he drive his own truck.

Ford hasnt built a reliable diesel since the 7.3. If u want diesel go with cummins or duramax.