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Old Feb 17, 2025 | 08:00 AM
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Gas vs Diesel

I am planning on buying a 9,000lb travel trailer (dry). I would use it to primarily go to a camp ground 2 hours away, once per month. However, twice per year, I would drive it to the North Carolina mountains, which are about 9 hours away. I also would like to use the truck as a daily driver to commute around town daily (>25 miles).

1) should I get a gas or diesel engine? I would be willing to drive it at highway speeds for 30mns once or twice a week for the regeneration if the power stroke would be better.

2) would the Godzilla engine handle steep mountain grades while pulling a 9k trailer?

Thanks in advance for the help!
 
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Old Feb 17, 2025 | 08:23 AM
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Either one will work fine for your stated needs. Now time to sit back and watch the diesel v.s. gas arguments.
 
Old Feb 17, 2025 | 08:25 AM
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Originally Posted by Strider250
Either one will work fine for your stated needs. Now time to sit back and watch the diesel v.s. gas arguments.
Thanks! Yes, I'm looking forward to the debate, and hopefully, some clarity. I've been debating in my mind for some time now.
 
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Old Feb 17, 2025 | 08:40 AM
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Ok, here you go. Gas - cheaper both initially and in maintenance but mileage is poor. Diesel - better mileage but more expensive initially and in maintenance. Both will pull your trailer with no problems. You must decide what is most important to you.
 
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Old Feb 17, 2025 | 08:49 AM
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Save the debate and thread closure ... diesel is king.... bla bla bla.

https://www.ford-trucks.com/forums/1776300-6-7-or-7-3gas.html

 
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Old Feb 17, 2025 | 09:27 AM
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Both have their advantages and disadvantages. Personally, I'm a diesel guy for towing, but new diesel trucks are not worth it IMHO. They're way, way to expensive and all the emissions control BS on them causes early failure/ low service life.

I like my old Cummins 12 valves (which are basically road going farm tractor engines), but if I was just looking to buy a new truck for your stated use , and not mess with it ,,,, as much as I hate to say it ,,, I'd buy the gasser. IMHO the EPA has ruined / killed the light duty diesel market.
...
 
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Old Feb 17, 2025 | 09:30 AM
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Thanks for the replies so far, everyone.

@Antonm23 I have heard your argument about the EPA requirements and the effect on newer diesel's. This is one of the reasons why I've been second-guessing them.
 
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Old Feb 17, 2025 | 09:34 AM
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So far all the opinions are fair. Diesels are more expensive to run. With today's diesel emissions, as far as I am concerned, they are not ready for prime time and that would prevent me from buying anything new. I would try and source something without DEF and a DPF.
 
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Old Feb 17, 2025 | 09:43 AM
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Originally Posted by 1Butcher
So far all the opinions are fair. Diesels are more expensive to run. With today's diesel emissions, as far as I am concerned, they are not ready for prime time and that would prevent me from buying anything new. I would try and source something without DEF and a DPF.
Agreed, but any pre DEF/ DPF truck is now at least 17 years old. So even if you found a nice low milage example, there are still things that are going to need work just from age. And paying shop labor rates to keep a old truck going is a no-win situation that's often more expensive than buying a new truck.

IMHO buying a pre-emissions diesel is only financially viable for an avid home garage DIY type person that can do all the maintenance / repair work themselves. I see a couple people absolutely going broke in the Excursion forum trying to keep an Excursion going paying shop labor rates.
...
 
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Old Feb 17, 2025 | 09:48 AM
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Yeah, you are right, but a complete rebuild would be cheaper than fixing a 5 year old emission problem.
 
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Old Feb 17, 2025 | 09:52 AM
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How about downhill? Would the lack of exhaust brakes change the analysis?
 
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Old Feb 17, 2025 | 10:12 AM
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Diesel is more powerful and can sustain its power much easier than gas, there's no debate there. With that said the newest godzilla engine has more than enough power to tow your stated weight but you just have to reach for it sometimes at higher rpm where the noise seems to get under the skin of some people and stress them out.

As far as possible diesel expenses, how long do you plan to keep this truck? If youre in and out of the truck in a short window and low mileage chances are you will never run into the diesel emissions repairs or fuel system repairs that cost sometimes upwards of $10,000.

My ultimate suggestion is actually renting the trucks in question and hooking them up to your trailer for the actual experience. Well worth a few hundred dollars to rent a truck instead of hypothetical debate according to other people's personal experience and preference. Some days I have as much as 26,000lbs behind a godzilla and im comfortable with that, others would have a stroke
 
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Old Feb 17, 2025 | 10:45 AM
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Originally Posted by BGTravels
How about downhill? Would the lack of exhaust brakes change the analysis?
Exhaust brakes are nice and all, but until VGT turbos became a thing, most light duty diesels (aka pickup truck diesels) didn't have exhaust breaks, so its not like they're the end-all-be -all.

For example, none of my three diesel trucks have an exhaust brake, and sure it'd be nice to have one, but I'm not rushing out to buy them either.
...
 
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Old Feb 17, 2025 | 10:47 AM
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I guess exhaust brakes really matter if you need one. There are plenty of us that don't live around mountain passes.
 
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Old Feb 17, 2025 | 04:47 PM
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Originally Posted by BGTravels
I am planning on buying a 9,000lb travel trailer (dry). I would use it to primarily go to a camp ground 2 hours away, once per month. However, twice per year, I would drive it to the North Carolina mountains, which are about 9 hours away. I also would like to use the truck as a daily driver to commute around town daily (>25 miles).

1) should I get a gas or diesel engine? I would be willing to drive it at highway speeds for 30mns once or twice a week for the regeneration if the power stroke would be better.

2) would the Godzilla engine handle steep mountain grades while pulling a 9k trailer?

Thanks in advance for the help!
It depends on how you define "better". The gas engine will easily tow your planned trailer in the NC mountains. The gas engine has plenty of power, but the power comes at higher rpm (e.g.4,000) than the diesel. Some don't like the noise, but it is no problem for the engine. At your trailer weight, the diesel's exhaust brake is not needed. For everyday driving that does not involve towing, the gas engine is a better choice for many reasons you will find in this thread and others that have been linked. A diesel can be a good daily driver, but its real benefit is for towing heavy loads. For your use, the gas engine is a better fit especially since it doesn't sound like you have had a diesel previously.

Of course, if you want a diesel, then go get one and enjoy it but you don't need it for your use.
 
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