I continue to see more and more 3/4 ton Ram Hemi's on the road and I'm starting to see some 7.3 Super Duty's on the road as well. I suspect this trend will continue as this couple have made the change for their towing needs.Link

So gassers are getting more powerful….and so are diesels….Not sure what the news is here. Buy what ya think fits ya. And in these peoples case and so many, spend, upgrade, spend more, down grade, still spend more, change your mind, spend even more…..These types of folks were made for dealers!And his wife must be a total Nancy, since you can almost hear a mouse fart in the cab of a new Cummins pickup. If that’s too loud, wait til that 7.3 drops 4 or 5 gears to get up the hill!

I will start. Great combination. Hemi is good. Dodge is good. All is good.

With diesel running 20-30% more per gallon and getting 20-30% more MPG...any claims of fuel efficiency gains becomes a wash.And with gas engines capable of ever larger tow ratings, much of the diesel advantage goes away. Especially when looking at up front costs.I would still lean diesel if over 14-16k but much below that range, gas is a very effective combination. In the middle of that range it would likely depend on the number of miles and driving conditions.

Another factor to think about is the fact the emission control systems on the diesels lack of dependability. This means the diesel has lost a major sales point. Then I think many that if their gas engine will last as long as most other components of the truck where is the advantage in a engine that will last 2-3 times longer? Still no glider kits for light duty trucks.

I am waiting on my 2024 gas 6.6 with the 10 sp. I had the 2020 gas dually, and had no issues in Michigan towing my trailer or the 15k loaded gooseneck. If the 10sp improves fuel economy, I will most likely make the following tow vehicle gas. The price difference in January has been more like 40% - 50% higher.

Diesel to Gas Power Observation | Good Sam Community

blt2ski
Moderator
Feb 02, 2023
You all can take this to the stuck deezals vs gazer thread!

But what suits you best, not what someone says you should buy....

Marty
mosseater
Explorer II
Feb 01, 2023
Grit dog wrote:
Now we’re cookin with gas…..or diesel:…
We got the 20mpg HD gasser club, roflmao, you do realize that’s not a thing,right? Vs the diesel has been more expensive for 20+ years, also umm not true.
And the guy who “won’t chime in” but followed that statement with a paragraph of chiming in…
This is the makings of a good old fashioned geezer.net debate!

How is it not a thing? And I chimed in with my assessment for ME. Y'all can tell yourself whatever you need to hear. I have no need to fabricate anything. Do you understand averages? Or were you eating paste that day?
Grit_dog
Navigator
Feb 01, 2023
^Agree, not even a contest.
Like comparing the taste of a basketball and a watermelon just be use they’re both round and the same size.
A good exhaust brake on a smaller displacement diesel will blow the doors off the biggest gasser under your hood in grade braking. Hands down.
mosseater
Explorer II
Feb 01, 2023
IdaD wrote:
mosseater wrote:
I don't chime in on diesel vs gas. I personally don't see a need for ME to pony up another $10k for a diesel. My '22 F-250 Supercrew is quite nice with the 7.3. For those comparing peak torque 6.6 v 7.3 you may want to see when that torque curve comes in. About 1000 rpm for the Ford and about 4k rpm for the 6.6 to reach the same number. The 7.3 is a great combo with the 10 spd and has gotten about 20 mpg on decent highway, about 15 average. Around town and idling in 4 wd about 12-13, and 10-11 towing my 8000lb trailer. I'm very happy with it so far.

I suspect the 11.3 average MPG figure on Fuelly for the 7.3 in a Super Duty is a more realistic expectation most folks should have. The 10 speed certainly helps which is why it doesn't average single digits. I think my 2015 Cummins overall MPG average over 100k miles is about 15. A big gasser won't do as well as it regardless of the transmission.

Towing with any weightlYes. But I took this truck with about 1000 lbs on board to Nashville and running 70-80 most of the way averaged 17.8 on the way down and 16.9 on the way home. My 150 wouldn't get 15 mpg off a cliff. This engine runs about 1750 rpm at 80 in 10th and has enough torque to not shift into 8th or 9th unless it's a decent hill.
Nothing get good mileage towing any weight.
wnjj
Explorer II
Feb 01, 2023
JRscooby wrote:
I would still like to see side by each comparison, equal weights, displacement, gears, and wind resistance, diesel with exhaust brake to closed throttle on gas engine.

The exhaust brake should outperform the closed throttle. The closed throttle can only pull at most a perfect vaccuum on the top of the piston. The exhaust brake can build a much higher pressure by compressing a full charge of air. More pressure difference = more resistance and more stopping power.
MFL
Nomad II
Feb 01, 2023
Going off my 6.2 gas 6-speed with 3.73, towing my FW, I think the "gold standard gas" that Fish mentions, and using 4:30s, will handle anything a SRW can carry. If you need a DRW to carry your FW trailer, you likely need a diesel to pull it.

I do think a 7.3 gas in a DRW would work fine for a TC.

Jerry
Grit_dog
Navigator
Feb 01, 2023
^At least GM will get a 10 speed to go with the lowest powered gasser, next year.
But bottom line all the gassers now with 8-10speed gear boxes pull real well compared to anything in the past.

10 speeds is the practical limit though. Actually 9 is. My 10 speed half ton is only about 150rpms between 9 and 10. Virtually imperceptible and it never really downshifts to 9th. If you need a downshift from 9th it hits 8th right away.
FishOnOne
Nomad
Feb 01, 2023
stsmark wrote:
In 2020 the TFL guys did the Ike with a 7.3 10sp. with 4:30 gearing. They used large living quarters horse trailer loaded to 16k. On the downhill it took 9 brake applications to hold their 50-60 test. On the uphill it did it in 8:47 secs which is close to perfect 60 mph constant. Trucks fuel meter said 2.2 mpg during the climb.
Same setup with GM 6.6 6 sp. did 10 brake and uphill was over 11 min. at 2.3 mpg.
Just an fyi.

The Ford 7.3 with the 10 speed transmission is looking like the gold standard gas engine for towing. I've read several reports who tow heavy with this setup and are completely satisfied.
stsmark
Explorer
Feb 01, 2023
In 2020 the TFL guys did the Ike with a 7.3 10sp. with 4:30 gearing. They used large living quarters horse trailer loaded to 16k. On the downhill it took 9 brake applications to hold their 50-60 test. On the uphill it did it in 8:47 secs which is close to perfect 60 mph constant. Trucks fuel meter said 2.2 mpg during the climb.
Same setup with GM 6.6 6 sp. did 10 brake and uphill was over 11 min. at 2.3 mpg.
Just an fyi.
Huntindog
Explorer
Feb 01, 2023
mosseater wrote:
I don't chime in on diesel vs gas. I personally don't see a need for ME to pony up another $10k for a diesel. My '22 F-250 Supercrew is quite nice with the 7.3. For those comparing peak torque 6.6 v 7.3 you may want to see when that torque curve comes in. About 1000 rpm for the Ford and about 4k rpm for the 6.6 to reach the same number. The 7.3 is a great combo with the 10 spd and has gotten about 20 mpg on decent highway, about 15 average. Around town and idling in 4 wd about 12-13, and 10-11 towing my 8000lb trailer. I'm very happy with it so far.
8K is not much of a load. Gas is fine for that.