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  #1  
Old 08-23-2012, 02:52 AM
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TheChiefsLawnCare TheChiefsLawnCare is offline
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Diesel MPG

Im considering getting a ford f250 or f350 to pull a fully loaded 7x16 enclosed tandem axel trailer. Right now I have a 07 GMC sierra 1500 with the flex fuel engine and the gas mileage is killing me. Do yall think I will get that much better mpg with the diesel. If I had to guess i would say im proab getting between 7-10 mpg with the sierra. I would also like the heavier truck for the bigger payload.
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Old 08-23-2012, 06:05 AM
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I pull a heavy trailer with 4' expanded metal sides and 5' expanded metal ramp.

Every one knows that expanded metal pulls hard thru the wind.

Driving a 2000 F250 7.3L diesel with 4x4 and 6 spd manual trans.
I rarely drive over 65 and get 12.8/9 fairly consistently.
Just the truck with no trailer keeping it under 70, 18.5 is totally doable.
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  #3  
Old 08-23-2012, 06:59 AM
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TheChiefsLawnCare TheChiefsLawnCare is offline
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better than what im doing when im not pulling any trailer. when that truck when my everyday, before i got my work vehicle, i was getting about 13 mpg. new gas trucks get horrible mpg. my dad got an 08 f250 diesel with camper top and city driving i think he said he was getting 11-12. and he drives slow and dosent let into it. so you still doin better then the new diesels, and you have a much better sounding truck lol
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2007 GMC Sierra 1500 NBS
2012 7x16 Tandem Axel Enclosed Trailer
2006 Walker 36" GHS w/ 20HP Kohler
2012 Wright 32"
2011 Toro 32" wb Floating Deck w/ Kawi
2007 21" Snapper Hi-Vac w/ Kawi
2007 21" Heavy Duty Toro w/ Kawi
McLane Commerical Walk Behind Edger
Stihl FS 110R String Trimmer
Stihl FS110r String Trimmer
Stihl FC 110 Stick Edger
Stihl BR 600 Back Pack Blower
Stihl HL 100K (135º)Hedge Trimmer
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Old 08-23-2012, 09:14 AM
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Quote:
Originally Posted by TheChiefsLawnCare View Post
better than what im doing when im not pulling any trailer. when that truck when my everyday, before i got my work vehicle, i was getting about 13 mpg. new gas trucks get horrible mpg. my dad got an 08 f250 diesel with camper top and city driving i think he said he was getting 11-12. and he drives slow and dosent let into it. so you still doin better then the new diesels, and you have a much better sounding truck lol




Low mileage 7.3Ls can be found but you can't be in a rush to buy one.
Its one of those start looking things and be ready to jump fast when you do find one. They don't last.

There are a lot in the 200k to 300k miles range.
Those guys seem to think their trucks are worth twice what they are too.
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Old 08-25-2012, 09:54 AM
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jvanvliet jvanvliet is offline
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Originally Posted by BPS## View Post
Low mileage 7.3Ls can be found but you can't be in a rush to buy one.
Its one of those start looking things and be ready to jump fast when you do find one. They don't last.

There are a lot in the 200k to 300k miles range.
Those guys seem to think their trucks are worth twice what they are too.
If you find a 7.3 with low miles better bring a diesel mechanic. If it doesn't have close to 200K or more on it, it's probably been sitting on blocks cause it doesn't run.

New diesels don't do all that well on the MPG's and diesel fuel is more than premium these days.

It's hard to justify a price premium for a new diesel given the gasoline engines get nearly as many MPG's, have the same load capacity and cost thousands of dollars less. Also, I don't believe the new HP numbers since they have new formulas for calculating them.

We have:

1 1997 F350 7.3 ltr International, about 300K gets about 12 mpg pulling 22ft enclosed trailer (loaded, 3 machines , etc.) we don't drive it like a race car.

1 1999 Dodge 3500 5.9 Cummings, about 200K gets about 16 mpg pulling same type of trailer.

Both in very good condition and neither one has problems pulling a load; Ford is an automatic & the Dodge is standard shift.

I keep my eye out for these warhorses, if I find one that meets my specs, I'll probably buy it and keep it as a backup. They don't make em that tough anymore.
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Old 08-26-2012, 01:53 PM
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Quote:
Originally Posted by jvanvliet View Post
If you find a 7.3 with low miles better bring a diesel mechanic. If it doesn't have close to 200K or more on it, it's probably been sitting on blocks cause it doesn't run.





Rarely.



Much more likely is that it was a geezer truck that sat in the garage a lot staying like new.
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  #7  
Old 08-26-2012, 02:32 PM
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PlantscapeSolutions PlantscapeSolutions is offline
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Quote:
Originally Posted by BPS## View Post
Low mileage 7.3Ls can be found but you can't be in a rush to buy one.
Its one of those start looking things and be ready to jump fast when you do find one. They don't last.

There are a lot in the 200k to 300k miles range.
Those guys seem to think their trucks are worth twice what they are too.
Do your research if your buying a high millage 7.3 because some years had powdered metal rods that were know to fail at about 200K. The 7.3 was a good motor by Powerstroke standards (I had a 97 F250) but the 12 valve & 24 valve 5.9's were much stronger engines. The block, pistons, crank, and just about everything else is much stronger and could handle 1000 HP with no internal mods. Just throw a better lift pump or FASS system on one of those 5.9's and they will last longer and have less issues.
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Old 08-26-2012, 06:14 PM
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Originally Posted by PlantscapeSolutions View Post
Do your research if your buying a high millage 7.3 because some years had powdered metal rods that were know to fail at about 200K.




I think that started in 02 and continued into 03 until the 7.3 was replaced with the disaster that became known as 6.0shit.

"0shit" coming from what happened when that engine sh(t the bed along the side of the road.
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  #9  
Old 08-29-2012, 12:31 AM
slowleak1 slowleak1 is offline
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Originally Posted by PlantscapeSolutions View Post
Do your research if your buying a high millage 7.3 because some years had powdered metal rods that were know to fail at about 200K. The 7.3 was a good motor by Powerstroke standards (I had a 97 F250) but the 12 valve & 24 valve 5.9's were much stronger engines. The block, pistons, crank, and just about everything else is much stronger and could handle 1000 HP with no internal mods. Just throw a better lift pump or FASS system on one of those 5.9's and they will last longer and have less issues.
BAHAHHAHAHA

This post is hilarious. So funny I didnt even read the rest of the thread. PMR's wont fail at 200k. Completely untrue. PMR's fail due to advanced timing and running anything north of 400 HP, which I doubt the OP will do.

And a 5.9 making 1000 hp on stock internals? Keep dreaming. It's been done but it is no where near reliable. You should do some more research and put down the diesel power magazine.

My 7.3 (01 with 320k miles) with PMR's runs like a champ, gets 20+ mpg unloaded on the highway and 12-14 depending on what I am towing.

My 05 6.0 got about the same mileage but had alot more towing power. It was a blast to drive and never gave me any issues in the 20k miles I put on it.

I know several people with reliable 5.9 cummins that have the same power and get the same mileage.

Pick what truck you like, test drive the $hit out of it and get it. Once you go diesel you will never go back to gas.
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  #10  
Old 08-29-2012, 09:35 AM
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PlantscapeSolutions PlantscapeSolutions is offline
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Quote:
Originally Posted by slowleak1 View Post
BAHAHHAHAHA

This post is hilarious. So funny I didnt even read the rest of the thread. PMR's wont fail at 200k. Completely untrue. PMR's fail due to advanced timing and running anything north of 400 HP, which I doubt the OP will do.

And a 5.9 making 1000 hp on stock internals? Keep dreaming. It's been done but it is no where near reliable. You should do some more research and put down the diesel power magazine.

My 7.3 (01 with 320k miles) with PMR's runs like a champ, gets 20+ mpg unloaded on the highway and 12-14 depending on what I am towing.

My 05 6.0 got about the same mileage but had alot more towing power. It was a blast to drive and never gave me any issues in the 20k miles I put on it.

I know several people with reliable 5.9 cummins that have the same power and get the same mileage.

Pick what truck you like, test drive the $hit out of it and get it. Once you go diesel you will never go back to gas.
I agree 100% that it would really suck to go back to plugs after burning oil in the newer 600-800 ft lbs trucks. It would be like willingly castrating yourself.

This http://www.dieselpowermag.com/tech/f...d/viewall.html is a different Diesel Power article but it touches of the performance failures as well as the occasional high millage stress cracking failure due to the rods being cheaper PMR's rods versus better quality forged rods used in the Cummins.

I may have misquoted the other article. The other article I had read listed all the issues with the various Powerstroke engines and mentioned 200K as being no problem for reliability but to be careful after that when thinking about purchasing one. My 7.3 died at 74K so I moved on to engines that were built to higher standards. I realize 174K is not the norm for failure.

It's easier to find decent used Diesels in Texas now that have six in a row. But back in the early 2000's it was just about impossible to find a used Cummins in the 120K-160K range. The wholesale auctions where dealers unload their trade ins had nothing worth buying. One of the trucks I saw was a 24 valve with 512,000 miles on it. Most guys who bought the earlier year Dodge truck drove them until the body rotted off the frame.

I figure if the Cummins is the #1 engine choice used to repower 6.0's, used in the new F650 & F750, and used more in repowering many older makes and models of vehicles then any other Diesel engine then they must be doing something better then the competition. If Chrysler had gone belly up and the Cummins had ended up in all the Ford trucks I would have had to suck it up and buy another truck with a blue oval. Thank you Obama .
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