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Old 12-10-2019, 04:32 PM   #29
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I am impressed and encouraged by the mpg you are getting and the size trailers you are pulling.

What effect would 2 wheel drive have on mpg?

What effect would the 10 speed transmission have on mpg?

My 20k mile 88 XLT 4x4 with 460ci gets 8 mpg empty and as low as 5 mpg pulling an Outdoors RV 20FQ

Driving over the Washington State passes and a few place on I-5 between Bellingham and Seattle my max speed C6 in 2nd gear is 45 mph.

I know that a diesel would effortlessly allow me to maintain the speed limit while pulling this trailer over the passes and I would have 100% mpg improvement both empty and pulling the trailer.

7.3 should have no trouble maintaining speed limit over passes, jury is still out on mpg.

It appears that the 6.3 will allow me to maintain speed limit in most and possibly all cases.

This is EXACTLY why in 2010 I bought a used 2001 Dodge Ram Laramie CTD 2500 with 3.55 gears, 5 speed manual and 234,000 miles. It pulled both of our 5ers with ease, the second topping out at 12,500#.
Well at 315,000 miles we decided it was time to upgrade so we found a used 2016 Ram Laramie 3500 DRW Aisin 3.73, with 27,500 miles. Wow the trim they call Laramie has come a long way!



The 2001 could get 20 mpg empty on the hwy, about 14 to 15 town, and about 12 towing.


The new to us Ram 3500 gets about 17 to 18 highway, 12 or so city and about 11 towing. Keep in mind this truck weighs 10,000# as we drive it every day.
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Old 12-10-2019, 04:40 PM   #30
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Got to remember my 2012 super duty diesel was the 1st gen 6.7. Ford has since changed and beefed up the turbo.

Watch YouTube to help understand SCR, DPF, DEF etc.

By ticking time bomb I mean if something goes wrong with a diesel engine or complex exhaust system it will cost thousands of dollars to get it fixed. I heard it costs $8,000 to have a old diesel particulate filter replaced.

I hope that is not true and the cost is more like $800 and someone just read that cost wrong.

The most common problems I think are clogged EGR, clogged DPF, bad fuel injector, bad (old) DEF. I would want to understand how much it costs to fix these problems.

I had my oil changed like clock work every 5,000 miles. If I happen to buy a new diesel and plan to keep it a long time I would change oil every 3,000 miles.

I would also drive the truck harder and not baby it like did.

Changing oil now days at 3,000 mile is both a waste of money and resources. The current Ram Cummins has a 15,000 mile change interval.

I recently did the second change on the new to us 2016 Ram 3500. The first I did at just over 30K as the dealer had changed at 27,500 miles, the second has just over 10,000 miles the oil was tested and still had plenty of additives, on dino oil.
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Old 12-10-2019, 05:48 PM   #31
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I would worry about soot getting into the oil from the EGR. You have to remember all the soot diesel engines produce. That soot has to go somewhere.
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Old 12-10-2019, 06:28 PM   #32
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I would worry about soot getting into the oil from the EGR. You have to remember all the soot diesel engines produce. That soot has to go somewhere.
I had a Deuce and a Half for a couple years.
I switched it from Multi Fuel over to Diesel only, it was the most power I ever gained for a cost of around $1.

For a while after switching, it would really blow a lot of soot and sparks out of the stack.
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Old 12-10-2019, 06:58 PM   #33
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I would worry about soot getting into the oil from the EGR. You have to remember all the soot diesel engines produce. That soot has to go somewhere.

I doubt that Cummins would recommend 15K oil changes if their engineers felt they had a soot issue.
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Old 12-10-2019, 07:15 PM   #34
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Max mileage between oil change for me would be 7k.
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Old 12-22-2019, 03:42 PM   #35
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Ive pulled 14,000 with my Dodge 2500 Ram with 6.0 HO turbo diesel with no problem. Just make sure your hitch is adjusted properly .
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Old 12-22-2019, 05:50 PM   #36
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My sig has the details. Camper GVW is 10600 or so. We pull it close to limit most of the time. We are in Idaho and do mostly mountain traveling it seems. Long steep pull will get me pushing the gas pedal to 4500 rpm. 4.30 gears make all the difference and barely hurt the gas mileage while empty.
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Old 12-22-2019, 06:49 PM   #37
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I had a 2015 f250 6.2 4x4 and a 33 ft TT that weighed 8500# dry it pulled it great. I’ve since traded for a 5ver and a f350 diesel . I’m sure it would have been ok with the new camper also but I like to be on safe side of payload and I ran across a good deal on the new truck . I think the 6.2 f250 is a great truck for most any travel trailer with the proper weight distribution hitch I had a curt .
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Old 12-22-2019, 06:54 PM   #38
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2013 F250 Lariat Diesel that we bought in 2018, towing a 2020 Jayco Pinnacle 36SSWS. The truck has a tow package on it, and automatically gears up or down when towing and climbing or descending. It also came equipped with built in electric breaks. We know it was built and bought in Missouri, and we believe the original owner had it tricked out to tow a camper to relocate up to Alaska where we bought it.
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Old 12-22-2019, 07:37 PM   #39
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I went from a 2012 super duty diesel that I had for 6.5 years with out any problems to a 2017 F-250 6.2 gasser for piece of mind. I always hated when towing and my diesel truck would go into regen mode. Oh sure it was a great powerful engine for towing but man is it complex.

Read up on the EGR, SCR, DEF and pressure of the fuel system or just look at the exhaust system on any diesel truck. Try to count the sensors. They are all the same. Read up on the regen process. I felt after 6.5 years it was time to get rid of the ticking time bomb.

If you are going to buy a brand new truck you will have some great options. I test drove the 2020 Chevy 2500HD 6.6 gas truck. That truck drove very nice. Nicer than my 2017 F-250 6.2 gasser by a little bit. I am waiting for the new Ford 7.3 liter gas engine with the 10 speed in a F-350 SRW truck to compare it with the 2020 GM 3500 with the gas engine.
I keep hearing about this regen thing. How often does it happen and how would I know. I have never seen any evidence of it and I hauled a new 42ft 5er weighing over 16,000 lbs from northern ontario to Vancouver Island with no issues. Have since put on 30,000 Kms/18,000 miles and still have no knowledge of this regen thing. I installed an after market gauge reader and have one set to % soot load and I see it go from low to near 100 then drops back to low numbers. I hear of lots of issues with Rams but I have a 2017 F450. Maybe it doesn't have it???
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Old 12-22-2019, 07:45 PM   #40
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Got to remember my 2012 super duty diesel was the 1st gen 6.7. Ford has since changed and beefed up the turbo.

Watch YouTube to help understand SCR, DPF, DEF etc.

By ticking time bomb I mean if something goes wrong with a diesel engine or complex exhaust system it will cost thousands of dollars to get it fixed. I heard it costs $8,000 to have a old diesel particulate filter replaced.

I hope that is not true and the cost is more like $800 and someone just read that cost wrong.

The most common problems I think are clogged EGR, clogged DPF, bad fuel injector, bad (old) DEF. I would want to understand how much it costs to fix these problems.

I had my oil changed like clock work every 5,000 miles. If I happen to buy a new diesel and plan to keep it a long time I would change oil every 3,000 miles.

I would also drive the truck harder and not baby it like did.
Newer 6.7 Gen2 are not having EGR problems like the older Ford diesels had. Old DEF? That's easy, don't fill DEF tank up unless you are going on long trip. I get about 5000 miles on 5 gallons of DEF. I usually just buy 2.5 gallons from Frod dealer and I make sure it is less than 2 months old. DEF fluid has a usable life of about 1 year. I never buy DEF anywhere but a dealer, the stuff at Wally world and parts store have a very complicated date code. And never buy DEF from a fuel island dispenser, it gets to diluted everytime they fill the tank.
Yes the new diesel trucks have a complicated exhaust system with lots of sensors. And to replace the entire exhaust system does cost somewhere around $5000. But its not a big problem area unless you have 150,000- 200,000 miles.
A lot of people say diesels cost to much to operate, well they cost some money, but I do all my regular maintenance. Oil changes cost around $80 and that's with 13 quarts synthetic and factory filter. Fuel filters cost somewhere around $60 I think, I only do that once a year so I can not remember exactly. Which is not really that bad. One thing people seem to for get is diesels have good engine brakes which really saves on brake pad and rotor wear. If gasses that tow or haul a lot calculated in brake repairs it would maybe even out some of the maintenance cost. Plus figure in spark plugs, plug wires and other miscellaneous tune up parts it all adds up. I know diesels need injectors replaced but so do the gasses injectors, just seems like diesel injectors usually last a lot longer than gas injectors. Basically if something major goes wrong with either a gas engine or a diesel engine, it gonna be expensive to fix.
I have a 2018 F350 6.7 DRW, 4x4, crew cab, 8' bed, 4.11 gears, daily driver, and I carry a Northern Lite 10-2 slide in truck camper when I go rv'ing. Loaded up I'm at 13000 gvw, and the truck doesn't even notice. I have no problem going 80 down the highway, just got back from Maine, New Hampshire and Vermont mountains. The truck only once downshifted into 5 gear while going over a mountain, but easily maintained 65 mph. I get around 14 mpg with camper and cruise set at 65. If I drive with a heavy foot it will go down to 12mpg. Without camper I get around 17 mpg highway and 14 city.
Diesels do cost more than gas engines but they also have a higher resale value. After driving my diesel for 2 years I dont think I could go back to a gas truck.
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Old 12-22-2019, 07:45 PM   #41
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I keep hearing about this regen thing. How often does it happen and how would I know. I have never seen any evidence of it and I hauled a new 42ft 5er weighing over 16,000 lbs from northern ontario to Vancouver Island with no issues. Have since put on 30,000 Kms/18,000 miles and still have no knowledge of this regen thing. I installed an after market gauge reader and have one set to % soot load and I see it go from low to near 100 then drops back to low numbers. I hear of lots of issues with Rams but I have a 2017 F450. Maybe it doesn't have it???
Biggest tell tale in GM vehicles is elevated idle. I have a one month old 2019 duramax, and the first regen for me was at 720 miles.
It will vary based on usage.
Idled at about 850 or so for about 20 miles or something like that.

Currently have 860 miles...
Oil life is showing 89%
Fuel filter is 95%
Def still shows "ok"
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Old 12-22-2019, 09:47 PM   #42
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Hey everyone. New member and I currently own a 2019 ford f250 lariat sport 6.2 373 4x4. What are you f250 gas truck or even diesel truck owners towing? I'm rv shopping and well aware of my limits but am interested to see how far you guys take your trucks. Thanks for your responsed in advance. Cheers!
I have a F250 and tow a 28 ft trailer that grosses out at 7,600 lbs. I'm real conscious of weight and tow capacity. My experience is that the truck manufacturers always rate the vehicle for more than it can reasonably tow. Go to changingears.com to get a realistic tow capacity. Depending on axle rating, gear ratio, tires, etc. You maybe suprised on what you find. Ford say I can tow 12,500 with my F250, 6.7 diesel. Not even close. Yes, it would pull, but at what expense? I'm old school and don't want to to pull at 100%+ capacity. Not good for safety or equipment. We did a 7,500 mile trip and averaged 11.6 mpg. Arizona to NY, over the top to Wisconsin and west to Wyoming and home. Not a single problem. Btw, I like to run as close to 80 to 90% capacity as I reasonable can. I would recommend you find what you want as far as a trailer and size the truck to it. You will never regret having too much truck. Good luck!
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