Hey guys, I am thinking about upgrading to a newer truck, actually there really isn't much thought that has to go into it, I need something, my idi is awesome, but as far as reliable, its not there. I want a truck I can load the sleds on to the trailer and drive 6 hours to go snowmobiling and not have to think twice. So I have been looking at 6.4's for a while, and now I think my cards are in the right spot, and I am looking for trucks that have around 50k miles. My plans with the truck are an exhaust, intake, and spartan. I want to have a truck that I don't have to worry about like I said. The truck I currently have my sights set on is an 08, what should be my concerns as I look for a truck, I know the 6.4 is a good engine, but I also know it has its flaws. Thanks guys!

 

I love my truck but to be honest, IMO you really need to justify ownership of a diesel and realize the cost of maintenance and everything else before buying one. I don't think anyone could actually prove to me a current diesel is more reliable, more significant fuel efficiency and requires less maintenance then a gas powered truck. The newer diesels are improving and getting better as emission technology improves this could change in the close horizon.

I have seen more gas engine powered trucks since 2008 go high milage 100-150 thousand miles even 200,000 miles with no issues then i have the newer diesels. The era's of buying a diesel with the consumer idea of a truck that will last 300,000 plus miles and great fuel milage left the lot when the 7.3 diesel couldn't meet modern emissions. Im not saying these new diesels won't make it to 300,000 miles, but the cost to get them there won't be cheap which IMO is just sad considering the price tag of new diesel trucks. You could probably purchase two replacement crate 6.8 V10 engines for just what the fuel system cost on a 6.4.

LOL knowing all this id still buy a diesel, simply because it fits my needs, i tow a lot every week and work the truck hard nearly at or over the max GVW 75% of the time. I can justify the high cost of ownership for my application. Now this is just me, some people justify the diesel truck for no other reason then to have a diesel in the driveway. They don't tow anything or travel far and to each his own if you are finacial capable of this luxury why not no different then owning a luxury car. Either way as a potential buyer you need to weight out all aspects of owning a diesel so you will be happy with your purchase presently and for years to come.

Now with all that being said i don't think you will find a gas engine that will out preform a 6.0,6.4 or 6.7 in terms of towing HP and torque. For reasons that it appears you wanting to upgrade i have left the the 7.3 out of this discussion because they where pre 2003.

When looking at any of these diesel powered trucks take time to look the truck over. I would steer away from trucks that have had tuners on them as a first time diesel owner. I would preferably look for trucks where the owner had maintance records and the trucks looked well cared for. Personaly if my truck has a single leak the issues is taken care off regardless the issue. Some people well let things go tell it has to be fixed. IMO this is the wrong approach to a good diesel experience. Inspect the truck for oil leaks. The 6.0 and 6.4 have a bed plate that tends to leak after awhile. This repair involves engine removal to properly reseal it. Something to inspect and be aware of. Listen to how the engine starts and idles. A 6.0 will sound louder of the three but it should sound even no skips or rough idle. When looking at 6.0 powered trucks i would try to arrange a cold start to listen how it sounds. Most injector issues circumvent around a cold start condition. Test drive the truck listen to how it sounds should sound even and drive smooth. How does the coolant look? Is the coolant low? Low coolant could indicate a issue. Inspect around the degass bottle cap(coolant reservoir cap)is there a whitish or residue around the cap. This could indicate an overheat issue or possibly a blown head gasket issue. How does the oil look when the dip stick is pulled. All diesel's generally will be dark in appearance compared to a gas engine but the oil dark black and of a thick feel could indicate poor maintenance. On a 6.4 if the oil is very high(over filled) this could indicate an engine issue or poor maintenance by the owner. These are a few things that can help ensure a good buyer experience not necessarily prevent a bad experience.

Some may argue this but i also look at the overall appearance of the truck. A truck that is beat up generally is not maintained as well. Well kept trucks both inside and out can indicate the owner has maintained it better in my experience.

In addition you could try to pull a car fax on the truck. These can be a useful aide to see any issues the truck has had or what kind of maintenance the truck has had. In addition if possible try to pull oasis report from the dealer. IF looking at a truck at a ford dealer i would request this.

Each engine has its inherent flaws over different years.

The 6.0 diesel is rated at 325 HP and other 560 torque or 570 torque (2005 up)

IF you are looking for a 6.0 i would diffently post this in the 6.0 diesel forum. The knowledge i have is basic. 2003-2004.5 would be the ok and not preference year models. 2004.5 to 2005 would be better and 2006-2007 would be best.

The 6.0 carries a bad name but a lot of the issues can be brought back to poor maintenance which leads to expensive repair. There are things that can be done to improve the reliability. The most know issues with the 6.0 are egr cooler failures, injector issues caused from stiction, head gaskets and a few electric issues driven around the FICM. Thru the years improvements where made thru hardware changes and programing to improve these issues. Most places that work directly on 6.0's including dealers have leanered the issues and know how the diagnose issues quickly and effectively lowering the repair cost compared to when the engine first came out. Of the three engines i have listed above this engine is the most reasonable to currently repair. These engines can get 16+ MPG depending on the setup you have. Good maintenance is key.
Here is some good reading material:

6.0L Power Stroke Owner's Information
Common 6.0L Power Stroke Problems
6.0L Power Stroke Model Year Changes
Bulletproof Your 6.0L Power Stroke

The 6.4 diesel is rated at 350 HP and 650 Torque at the flywheel.

The 6.4 had a much better forthcoming then the 6.0. The birth of the 6.4 was a direct result of more stringent EPA emission controls. The 6.4 in my opinion was a ginny pig for the newer style DPF(DIESEL PARTICULATE FILTER) emissions. The 6.4 was the first power stroke to have this type emission equipment. A direct result of these newer emissions resulted in poor fuel economy and additional concerns to proper maintenance. The 6.4 had a completely different fuel system then previous powerstrokes. The 6.4 utilizes a high pressure fuel system at pressures up to 30,000 psi. The result of this new system was better cold weather starts, quieter engine operation, more refined engine HP and torque. When maintained correctly this engine can be reliable. When looking at trucks with this engine i would strongly suggest a ESP(EXTENDED SERVICE PLAN). Not so much that the engine is not reliable the cost to make repairs on this engine can be VERY high. The advance fuel system can be in the upward of 10,000.00 to repair alone. As a result of the DPF system this engine needs the most stringent maintenance plan of powerstroke diesel engines to date. Maintance is not just key it is absolutely a must. The repairs that can stack up will latterly break the bank if you don't not have a ESP or a warranty claim is denied due to lack of maintenance. Review a diesel supplement maintenance manual is also a must to fully understand the works of this engine and how to properly care for it.

To learn the most i would suggest looking at the 6.4 forum. Years to look at and there differences by job build dates.

Job 1 Build dates 01-07 thru 06-07

The first production run had a few issues. The most notable was the flame thrower exhaust a result of variable factors and faulty injectors. The issues was corrected by replacing spec injectors that had been damaged during factory testing.

This year also had more radiator issues due to some design concerns that ford issued a TSB to fix.

There are several other issues with this job build but they seem to be more hit and miss.

I would say this would be a ok year to look at.

JOB 2 ORDER GUIDE UPDATES – Effective on all vehicles built on or after Job 2 (07/30/07 – Subject to change)

• Tire Pressure Monitoring System (TPMS) is now standard

• Reverse Camera System (76V) is now optional on XLT, FX4 and Lariat. It includes a reverse camera mounted in tailgate handle bezel and video display contained in interior rear-view mirror. (Requires 90D Power Seats)

• The Harley-Davidson™ Ford F-Series Super Duty® (17H) is back, available on Lariat Crew Cabs. It has a Black monotone exterior or a new unique Black and Vintage Copper two-tone. The interior has black accents, black and dusted copper leather two-tone seats, black and dusted copper leather on the steering wheel, center console lid, and door trim. See the Packaged Options Page for all package contents.

• The Chrome Package (17C) is now available on XLT, FX4 and Lariat SuperCabs and Crew Cabs. It contains a unique chrome billet-style grille, chrome exhaust tip, chrome tow hooks, chrome mirror caps, chrome pickup bed tie-down hooks, and 5" chrome tubular step bars and requires the PowerScope™ Trailer Tow Mirrors.

• The King Ranch with Chrome Package (17R) is now available on Lariat Crew Cabs. It include all the contents of the King Ranch Package, plus chrome exhaust tip, chrome tow hooks, chrome mirror caps, chrome pickup bed tie-down hooks, and 5" chrome tubular step bars.

• The self-dimming rear-view mirror standard on Lariat now includes an integrated compass

• The PowerScope™ Trailer Tow Mirrors (54F) are optional on XLT SuperCab and Crew Cab only and require the Advanced Security Group.

• The Fleet Only Dual Beam Jewel Effect Headlamp option (59R) incl. the underhood service lamp.

• The Advanced Security Group (60F) now includes an auto unlock feature.

This would be a better job build range.

JOB 3 ORDER GUIDE UPDATES – Effective on all
vehicles built on or after Job 3 (01/02/08 – Subject to
change)
• The 60th Anniversary Edition (17A) is now available on XLT
SuperCab and Crew Cabs. It includes a two tone exterior paint
combination in Black with Dark Shadow Grey lower accent or
Dark Shadow Grey with Black lower accent, Chrome billet-style
grille, 5" chrome running boards, chrome exhaust tip, chrome
tow hooks and chrome pickup bed tie-down hooks, chrome
mirror caps, body color front and rear bumpers, accent color
wheel lip moldings, and unqiue 60th Anniversary Edition wheel
ornaments, box decals and badges. The Medium Stone interior
includes Sport Cloth Captain's Chairs, a leather wrapped
steering wheel, unique instrument cluster appliqué, 60th
Anniversary center console badge, serialization plate, and
more. Please see the Packaged Options page for a full list of
package contents.
• There have been changes made to the standard and optional
axles in the Axle Availability chart. Please review the Axle
Availability chart for all axle availability changes.
• The Front License Plate Bracket is no longer standard. The
Front License (153) is available as an option on all trims and is
forced in states where required.
• The Rapid-Heat Supplemental Cab Heater (41A) is now
available with manual transmission.
• The PowerScope™ Trailer Tow Mirrors (54F) are now available
on XLT Regular Cab (require the Advanced Security Group).
• A Winter Front Grille Cover is now standard and only available
with the 6.4L diesel engine in the following states: AK, CO, ID,
IA, ME, MI, MN, MT, NH, NY, ND, SD, VT, WI, WY.
LATEST ORDER GUIDE UPDATES
• The 3.73 Limited Slip Axle (X3L) is now available on F-350
SRW Pickups with the 6.4L diesel engine, automatic
transmission and 17" or 18" wheels.
Here is some reading material.

This job build range would be the best to look for 2009 forward had some neat features that where not available on earlier trucks.

The fuel milage of the 6.4 powered trucks was probably the biggest disappointment to powerstroke community. You can expect to respectably get 9-11 MPG in town and 12-14 MPG HWY depending on the rear end ratios you get. There are after market options to remove the emission equipment which can result an improvement of 2-3 mpg to the above numbers. As a result such modifications can result in the dealer voiding you warranty or even an aftermarket ESP company voiding your warranty. On the aftermarket scene the 6.4 tuned only has produced the most hp of any production engine of the big three. Some people have seen as much as 550+ hp to the wheels with only a tune. In comparison the factory HP to the wheels is around 270-295HP.

I currently have a Job 1 6.4 and it has been my favorite power stroke to date.

Here is some additional information to look at on the 6.4
6.4L Power Stroke Specs

This brings us to the 6.7 power stroke. The first of the powerstroke engines to be built in house by ford.

The 6.7 ratings are range from 390HP to 440HP and 735TQ to 860TQ depending on the year and truck application.

To learn the most about this engine i would suggest looking at the 6.7 forum .

The single two most advancements in this year model IMO where the emission system highly improved over the 6.4 and the newer 6 speed trans mission. The combination of the 6.7's ability to build low end torque on a solid curve and the transmission ability to lock the converter in any gear along with more refined emissions resulted in much better fuel milage in comparison to the 6.4 engine.

The 2015 has the highest available power ratings for this engine. With refinements to the turbo charger and other engine components along with transmission upgrades has made this the most power power stroke to date.

The longevity and issues of this engine would be hard to address as there are simply not a large number of high milage engines yet so time will tell. Most people i have talked to seem to be really happy with this engine. The issues i know to date are valve failures in early 2011 model sold in late 2010 thru 2012 and an inherent sensitivity to ANY water in the fuel. The 6.7 is probably the most susceptible to engine damage caused from water in fuel with the 6.4 running close for second.

My personal experience in milage was 15.5 MPG in town and 17.8 MPG HWY.

Here is some additional info on the 6.7
6.7L Power Stroke Specs

Of the years available i would look at early 2011-2012 as ok and 2013-2014 as better. The 2015 could be the best but again there simply are not enough miles to prove the changes have made the 2015 more reliable or better then previous years IMO.

Here are my sole opinions on the engines i have discussed :

If i had to pick between the engines above i would probably pick the 6.7, then the 6.4, then the 6.0 it terms of factory performance.

In terms of an engine that would be more user friendly to work on i would go 6.0 then 6.4 then 6.7. The 6.0 probably has the largest network of current information on DIY repairs and fixes. The 6.4 is slightly harder to diagnostic without the proper diagnostic equipment. Most major repairs result in the cab having to be lifted off for both quality of repair and efficiency. I don't know enough about the 6.7 to warrant how hard they are to work on i can reasonability assume they are at least as hard to diagnose or harder then the 6.4 . I haven't had the chance to mess with one yet.

In terms of milage and efficiency i would go 6.7 then 6.0 then 6.4.

In terms of higher cost to repair i would go 6.7 then 6.4 then 6.0

In terms of aftermarket performance i would say 6.4 then 6.7 then 6.0.

I really can not emphasize the importance of good maintance if you decide to purchase a diesel and have a good experience. Some of this is factual information and some is opinion so please take your time and research all this yourself to make the best informed decision. A little more time and research will result in you being happy for years to come.

If anyone sees some mistakes made I'm not perfect so don't be afraid to point them out so the OP has the best most reliable information. I generalized a lot of information here as the post is already long...lol theres alot more info out there Hope this helps.

 

Thank you for all this information! But let me clarify, I am not a first time diesel owner, and am not a novice on diesels, my 6.9(yes its old) has been fully rebuilt, and is awesome, but like I said, I really have always wanted a 6.4, not even a 6.7. I work at a 1300 acre farm and my truck now mostly gets used for driving 25 miles each way, to and from work. I do want a diesel, it is nice for when I have to hook to things and pull them, (wagons, implements, etc..) and I do want a diesel for the performance aspect too. I just know the 6.4's have had their fair share of issues, but also have picked up on, "proper maintenance and being proactive will keep it running strong" so mostly I am concerned on things I have heard or seen like
-fuel contamination issues
-radiator issuses
-fuel in oil issues
-some kind of ccv mods?

The truck I am looking at is an 08 but does have the backup camera in the rear view mirror, so I am guessing it is a job 2. The truck is all stock besides the wheels and tires and it has a leveling kit. I have been looking for an all engine stock truck because I know the dangers of buying some one else's problems. My plans with the truck are as soon as I can DPF delete and an intake, with a Spartan sometime in the first year.

Again thanks guys! I'll keep searching the forums for answers to my questions, I'm not one to sit around waiting for others!

 

Yeah i posted that a week ago for another member it has all the general info i was just being lazing not re writing it no offense intended.

 

No offense taken at all! It still had a lot of good info, sometimes I just know how the first time "I bought a diesel because....well I don't know I guess..." guys are!