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Discussion Starter #41
KrashDH;

So why is ATF recommended? It sounded like both the ATF and the 2SO were recommended for the same thing, unless I completely misunderstood their purpose(s). My thought was that either one was OK for lubricity in the fuel thus helping keep injectors and seals in good condition.

Joe
 

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here is a post with pics of mine after I pulled them... these had PSD & MMO on them forever, made it 160Kish miles but had bigger issues starting at 120~130k..


ATF, I use to help keep it performing its best. Just 8 oz to ~34-37 gallons is enough to keep it at its peak when used regularly. The 2 stroke oil is for the added lubricity. 20~24 oz with the ATF. the thread where I initially started having issues back in 2015~2016 (I think... or it it was 2016-2017, Nov- Jan is when that thread ran) is documented here on CF. I now have approx 120k on this set which has lived their entire life on the mix and still performing excellently. I will admit when I have run several (3~5 tanks) without the mix, performance starts dropping off and it is noticeable. Probably more so compared to the trucks that have their fuelling cranked up for more power (I went in the opposite direction for mpg). Approaching 438k on the clock, 420k of which I put on the truck.
 

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found the thread in the time frame where I had issues... for anyone interested...

 

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The ATF works more as an injector cleaner from what I can tell.
 
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Discussion Starter #45
tryNto;

OK that sounds like a good thing. It should not hurt anything to try.

Joe
 

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OP Joe, stop for a second and think about the numbers. You have a truck that you now presumably average driving far less than 5k miles per year (since you used to use it for your trailer and now don't and the kid uses it sometimes). So at 5k miles per year max, even "if" your assessment is 100% correct on the mileage loss, that's like 30 extra gal of fuel a year. In your scenario it makes sense to not spend more than $200 because that's what your "extra" fuel will cost you for the next 3 years, total!
That said, if you intend to keep the truck for many more miles, throw a secondary 2 micron fuel filter on it while your injectors still have good life in them. That's a good $200 to spend to save you 2 grand in injectors and more to have them installed.
Oh, and go drive the beans out of it. Sitting in the shop and putzing around town isn't helping it get better mileage. Besides, IDK what full size anything you could trade it for that would do better than 20mpg anyway. On the upside, you could buy a much newer 1/2 ton for what your garage queen low mile 3rd gen is worth and honestly for what you use it for and how little you use it, a nice little quiet smooth riding 1/2 ton is the better choice.
 

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Discussion Starter #47
Grit Dog;

If I understand your recommendation correctly you are saying to add an extra fuel filter rated at 2 micron capability. Or is it possible to replace the OEM filter with a new one that has the 2 micron filtering capability? If the filter is an add on unit, where should it be mounted? Is there a typical spot most members here would recommend?

As a follow-up, since I have been adding a pint of Mercon III ATF fluid and the Power Service Diesel Kleen product the mileage appears to be going up some. I just added the Stiction treatment to the engine oil. I have a trip planned for the weekend that will likely be over 1K miles. I am going to watch the mpg on the computer calculator and see how it goes. I plan to continue the ATF and the Diesel Kleen products for several thousand miles to see how much improvement if any that I can get. It is a relatively inexpensive treatment and if it works so much the better. After this trip I will refill and start measuring mpg by calculating it myself. It will be interesting to see how close the manual calculation comes to that reported by the on-board computer.

One thing about the situation is that the truck is paid for, and if all I have to do is some normal maintenance and perhaps adding an extra fuel filter, that is still less expensive than buying a new truck. The Cummins diesel has so much more power to pull a camper or a farm trailer than a gasoline engine pickup. It does so with greater fuel efficiency than a gasoline engine pickup even when its mpg is not at its best. 10-12mpg pulling a trailer is not bad and usually most gasoline V8 pickups will be in the 6-9mpg range for the same work. Right now with the economy the way it is and the way my retirement income has dropped, I don't want to take on another time payment for a new truck.

Joe
 

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Or run hot shots secret over either diesel kleen or 2 stroke oil since for lubricity it did better than top shelf amsoil 2 stroke oil and most are running cheap walmart 2 stroke oil.

:).
 

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Or run hot shots secret over either diesel kleen or 2 stroke oil since for lubricity it did better than top shelf amsoil 2 stroke oil and most are running cheap walmart 2 stroke oil.

:).
is the hss available at the auto parts stores yet? i have seen the FR3 and Stiction eliminator but never checked for the fuel additive
 

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is the hss available at the auto parts stores yet? i have seen the FR3 and Stiction eliminator but never checked for the fuel additive
Good question, not sure. I know Tractor Supply, Family Farm and Home, and Menards all carry both the Everyday treatment with the LX4 and the Extreme. I've been running the everyday one.

Meijer carries the HSS extreme.

Not sure who all lives near what, but does seem like the more farm oriented places carry it.
 
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strijw426

"I am going to watch the mpg on the computer calculator and see how it goes "

On board computer is not accurate, hand calculate to get useful real datao_O
 

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Discussion Starter #53
Just returned from a trip to/from West Texas. The trip return covered 404 miles at speeds ranging from 55-75mph plus some local driving in San Angelo stop & go with traffic lights. Most of it was high speed on good highways and on I-20 where speeds to 75mph are legal. I grew tired of driving slower and wanted to get home before dark. I left about 9AM and arrived home about 4:30PM with a lunch stop at a Love's station at Baird NE of Abilene. I refilled after getting home and had used 21.13 gallons covering the 404 miles, so my mpg was 19.12. I did not check the mpg for the trip to the destination, just the return leg.

The overhead console trip & mpg calculator showed 19.3mpg wich includes all driving since I had changed batteries a few years ago and reset the OBD system. It appears the console calculator is still within 0.2mpg of calculated values, so it is still pretty accurate.

I am not prepared to spend lots of money getting better economy. I plan to continue adding the recommended additives to the fuel until I use up the current supply I bought today. If I see no improvement, then it is what it is forevermore. My retirement income has dropped this year, so I don't have a lot of margin any more. I recently had to put my John Deere tractor in the shop so there is another unexpected expense. Such is life!

Joe
 

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Funny, I too haven't reset the overhead in well over a year and last week did a hand calculation on 80% around town (@ 6000' elevation) with 1 stoplight and go up the mountain road about 2500' higher for fishing, with 20% Hi-way at 73mph.
The hand calc equaled the overhead with 18.9, I was shocked.
 
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Its strange some are more accurate then others, my Overhead has always been 2-3 mpg higher showing 18-19 mpg , hand calc 15-16, running 4:10 on 285/70/17 Cooper MT, new 48re auto so hopefully more efficient see if it changes.:unsure:
 

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On the next fillup, I will reset mine and run 1 tank to compare. It will be awhile 'tho I don't get out much in the heat.
 

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I reset mine every 3 tanks and it stays pretty darn accurate. Every now and then it will be off by a mpg or so.
 

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I do mine every tank and record it on the fuel receipt with the other info. I have a spreadsheet with most of the mpg data however it does not contain that overhead data. Mines usually 1~1.5 hi
 

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I reset mine pretty frequently and between the equivalent of 4.10's with my early G-56,35's and a 2300# Northstar popup on my back all the time I'm lucky to get 13.5 mixed. The 35's really killed it over the 285-75-17's I had. I'm returning to that size next. I gain 3+ mpg instantly dismounting the camper but we use it frequently so it stays on. I run my Anarchy EFI on the 90 hp tune and take it easy. I keep the tach at 2K.
 
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