Pick Ups - Gas vs Diesel
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Pick Ups - Gas vs Diesel

  1. #1
    Senior Member Wishful Thinking!'s Avatar
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    Default Pick Ups - Gas vs Diesel

    Here is my deal... I drive a F-250 Super Crew gas v-8 (5.4l) as my daily driver. When I bought it. I don't know I'd be using it to tow a 28 foot deck boat so needless to say its under powered, actually its under powered when its not pulling anything. I currently get about 10ish miles per gallon and 7-8 when pulling the boat with regular gas containing up to 10% ethanol. Our trip to the lakes is only a 14 mile round trip but we have taken it on trip as far as 150 miles and plan to take it on longer trips so I'm considering trading it for a diesel.

    So my question is what kind of fuel mileage are you guys getting in your diesels? In our area, diesel is currently cost about 17% higher than gas so I would need to get at least 12 to break even.

    Thanks
    Hal

    PS... if you are getting 20 mpg and everyone else you know with the same truck is getting 15, please don't bother posting or share why you are getting so much more.
    First boat - 1968 Starcraft 14' 40hp
    Second boat - 1982 15.5' Glastron 115hp
    Current boat #1 1987 Ski Nautique 230 hp
    Currnet boat #2 - 2005 Magic DB 425 hp

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  3. #2
    Head Janitor FormulaZR's Avatar
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    We have owned 2 diesels.

    A 97 Dodge 3500 DRW. It had a 16V Cummins and 5 speed manual. It typically averaged 15 mpg, but would get 17-18 on the highway. A trailer of 5000 lbs would drop the mpg by 1-2.

    The last one was a 2007.5 GMC 2500. It had the LMM Duramax and Allison 6 speed automatic. It was totally stock and would get 14-16 average mpg, and 19-21 on the highway. Many people with the LMM do a DPF (diesel particulate filter) delete and a tune to keep the truck from going into regen. General consensus is that it will increase your mpg by 1-3 mpg. As with the Dodge, a trailer of 5000 lbs would drop the mpg by 1-2.

    When comparing the cost of a gas vs diesel truck - don't forget to also account for the (usually) higher purchase price of the vehicle and the increased cost of maintenance/parts.
    Last edited by FormulaZR; 09-25-2013 at 10:40 AM.


    "No, my boat doesn't need any more power" - No one ever

  4. #3
    Senior Member jdekruyf's Avatar
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    I just got a 2013 chevy with the lml duramax. Doing 70, fully loaded with 4 adults and my boat, which is light, I get 18 avg to the river. Around town as my daily driver it gets about 13-14 avg but I do a lot of around town and stop and go driving. I'd go with the diesel for sure. Always nice to have the power but sucks when you don't.

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    Member Scottybdiving's Avatar
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    2013 F 350 DRW 6.7L w 3.73 gears. I get 13-14 in every day driving. 8-9 pulling a fully loaded 5th wheel toy hauler that weighs 21K. I haven't had it on straight highway w/o the 5er, but hoping for 15-16.
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  7. #5
    Senior Member Mash on It's Avatar
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    96 Ford F 350, 7.3, auto, 3.54 rear gears, SWR. Hwy (empty) 21-23, best of 24.7. loaded w/ 12,000 5th wheel, 12.5-14 (12.5 over Grapevine) Towing the boat to the river (~4500 lbs), 17-18. Newer diesels are crap for mileage, Id rather have my old 7.3 PSD. 500K miles, too

    Daniel
    "Never mind the mule, Just load the wagon"
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  8. #6
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    I've got an '01 Chevy 2500, CC, LB, 2 wheel drive. I just did a 400 mile trip with the tuner on the 500hp setting and with the cruise set at 68-70mph, I got 22 mph. Not bad for driving a tank! I've done the same trip with the +50hp tow/economy tune and have not seen much difference in mpg. Towing my 25' 5er, I get about 13mpg but that is a lot of hill climbs between inland CA and Ft Bragg.

  9. #7
    Senior Member STV_Keith's Avatar
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    2001 Dodge 24v Cummins manual. Turned up a bit. Gets 15-16 in town, 16 on the highway at 80 with 3.54's and 35's. Towing a 10k# trailer, it gets 10.5-11 at 72mph.
    Keith-


  10. #8
    Senior Member NiceGuyEddie's Avatar
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    I had a 2006 Ford F250 Powerstroke and it was decent truck. I sold it with about 40k miles after I kept hearing the horror stories with them. Then I went to a 2008 Duramax. It was a solid truck (I just sold it with 107k miles on it and never had an issue with it) Lifted on 37s, tuned, plenty of power and decent mpgs for having 37" tall tires. After having a diesel (and especially one all modified for increased power) I could never see having a gas truck again for a serious tow vehicle. Gas trucks burn a ton of fuel, constantly run high rpms and lack the power tremendously!

    I decided to step down to a half ton because parking my truck was becoming a hassle at my home. And for the very little I tow, a half ton works fine. My boats are small, 19 and 21ft so the diesel is pure overkill. That and I want an RV as I'm over the travel trailer thing.

    If you're pulling that large of a boat the distance of my average trip (600+ mile round trip though 110 degree plus heat) I'd get a diesel! I guess it just depends on how far you plan on going and how often because 14 miles to the lake isn't a big deal!...Well, unless that 14 miles is up a mountain! lol.... At the end of the day, it's always better to have more truck than you need apposed to not enough. My Duramax on 37" tires would get 13.5 mpg pulling a loaded 28 ft trailer to the sand dunes and about 15 pulling my boat.

    If you buy a diesel, you will not regret it. Just stay away from Ford and Dodge!

  11. #9
    Senior Member ICDEDPPL's Avatar
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    I used to have a 7.3l Diesel Excursion now I have a 8.1L gas Dually.. I`ve found the difference in towing MPG to be about 2mpg better for the Diesel.. thats with a tuner on the 7.3L
    Where the Diesel really shines is when they are not towing.. then I used to get great gas mileage where as the 8.1L is still a gas hog. Since I mostly use my rig for towing is why I now have a Gas truck. Gas is easy to fix , have a breakdown on a Diesel, whole different story.

  12. #10
    Senior Member CC322's Avatar
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    Love my Ford f250 V10 its a 2003 with 88,000 trouble free miles. Been thinking about a new truck but i just dont know what? I do know it will be a Ford!!!!!
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    New here Beer:30's Avatar
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    Last truck was 1998 C3500 dually with Vortec 454/ 4L80e OD automatic, 4.10 rear. With all of the normal add-ons (headers, intake, etc) it got 8.5 around town, 8.5 towing, and a BEST of 12 at 75 on fwy. 36 gallon tank, had to top off in Barstow or could not make it all the way to Havasu.

    This truck, 2008 LMM DuraMax, DPF delete, Banks intake, Quadzilla programmer. On +50hp towing tune, I get JUST SHY of 13 towing the boat (10,000) with 4 adults, ice chest, luggage for a week, at 75 on the cruise. Same 36 gal tank, I can go non-stop to Havasu (340 miles door-to-door) and have just shy of 1/4 tank left.

    Empty, I get 18-19 at 80 on the cruise. Basically, those numbers are up exactly 2 mpg from stock. When I put the stock exhaust on for smog, I can hook the boat back on and get 11.5 towing the same amount at 75. In essence, the additions to the truck allow me 5-10 miles per HOUR faster while keeping the fuel burn the same as 5-10 mph SLOWER. Not to mention the crazy amount of added hp/tq.
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    Distinguished Member David 519's Avatar
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    I've had gas duallys since 1988 and currently have a 2000 Vortech C3500 Crew cab. The truck is all stock with 41k miles on it. I get about 8-9 slowly towing our 10k lb enclosed trailer w/race boat in it. Empty it does about 11-12 driving 60-65 MPH though I rarely drive it for anything except towing. I keep looking at the new diesels and would love to have one for the extra power but $60k+ out the door is a deal breaker. I can buy a LOT of gas for the difference in what mine is worth and what a new one costs...
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  15. #13
    Senior Member jdekruyf's Avatar
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    Quote Originally Posted by David 519 View Post
    I've had gas duallys since 1988 and currently have a 2000 Vortech C3500 Crew cab. The truck is all stock with 41k miles on it. I get about 8-9 slowly towing our 10k lb enclosed trailer w/race boat in it. Empty it does about 11-12 driving 60-65 MPH though I rarely drive it for anything except towing. I keep looking at the new diesels and would love to have one for the extra power but $60k+ out the door is a deal breaker. I can buy a LOT of gas for the difference in what mine is worth and what a new one costs...
    I want to build a 90's dually and drop a duramax or cummins in one. You could build a badass updated truck with all the new amenities for 60k I'd think.

    Too bad I just bought a new one a little over a year ago so I'm stuck with that for awhile

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