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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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