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Another fuel additive question, with a twist

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Reh Ranch

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My previous experience with diesel fuel additives is a 1996 Powerstroke that I used Stanadyne in every tank and a 2006 5.9 Cummins that I used Lucas in every tank.

I was talking to a friend of mine, that has been a Freightliner mechanic for 25 years, about fuel treatment options for my new 2022 6.7 Cummins. He said that they are starting to see trucks and get tech bulletins about emissions issues with trucks running fuel treatments all the time. Him and I also discussed that there are probably a lot of variables that go into those problems. His suggestion was to run nothing except in the winter time to try and avoid any problems.

Has anyone heard anything like this for our trucks?
 
I was running XPD with the CP4, but now that it's been tossed in the dealers dumpster (more likely sold on ebay by a tech), no treatment for mine.

It'll get a little PS in the winter and that's it.

IMHO, your friend speaks truth.
 
I have ran Hotshots EDT in multiple tanks since new. To be honest I have seen no differences in performance, sound, or mileage running EDT vs. not running it. In the future I will not be using additives.
 
I used to sell additives and I have used additives in all my trucks since 2006. I have never heard of, read about, or seen reported any damage of any kind caused by an additive for oil or fuel. One mechanic's comment that lacks a definition of, types of, or frequency of "emissions Issues" is not going to change my opinions about the value of additives. I probably have enough to last my lifetime, and I will continue to use them. I believe their best value is fuel system maintenance, improving poor fuel, and especially IMO for long-term preventative maintenance.

All that said, the mechanic's comment does cause me to look further into the issue. And to note that I'm sure there is a very high percentage of owners who never use additives than those of us who do. And they probably never had a fuel-related issue.
 
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it's more of a "feel good" play, with additives. having said that, I make myself feel good every two or three tanks. when I'm up north in weather, I will use the winter ps.

if I believed everything I've heard fall out of a mechanics mouth... lol
 
I did a test with and without EDT running same 300 miles loop. I had better fuel mileage (calculated). I tried to be as consistent as possible on the two loops. I dont remember the specifics as it was over a year ago but it paid the EDT and saved a lot more $. But that was that ONE test. Fluke? No idea. But if I get the chance to repeat same test I surely will do it.

With new pump installed, I will use all remaining EDT and LX4 until I run out of the stuff. Might buy EDT again if I can confirm a difference. LX4 was just to save the pump. Not needed anymore.

Is there a difference on emissions? I doubt it. But I have no data to prove either way.
 
The question I ask myself and suggest asking yourselves is.. have I ever noticed a difference in performance or sound & harshness from one tank of fuel to another? Say a old gas station as extreme example versus the newest and most ran through Shell station? I for one have experienced a ''bad tank'' of fuel and it is very noticeable the next time you fill up with a ''good tank'' and almost right away out of the gas station lot notice how bad the previous tank was. I do believe that cetane and fuel quality differs from station to station and timing.

I also think that there are proven results with using quality additives. If the ounce or 2 of LX4 helped on the 30 gallons to lubricate the CP4, then why can the same not be said for boosting cetane and dispersing contaminants? Sure, it is a feel good and most of the time not needed.. but I know that when I run across that bad fill up of fuel, adding the EDT or (HS Diesel Extreme every 5000km's) to the tank will and has helped some. I pride myself on having an excellent butt dyno, vision and ears.. watching the rpms flutter and what feels like in a gas car when timing is pulled or when you hear ''not the same sound'' your used to when doing a pull.. makes me think fuel quality matters and certain high quality additives can make a difference.
 
AEV_CUMMINS said:
The question I ask myself and suggest asking yourselves is.. have I ever noticed a difference in performance or sound & harshness from one tank of fuel to another? Say a old gas station as extreme example versus the newest and most ran through Shell station? I for one have experienced a ''bad tank'' of fuel and it is very noticeable the next time you fill up with a ''good tank'' and almost right away out of the gas station lot notice how bad the previous tank was. I do believe that cetane and fuel quality differs from station to station and timing.

I also think that there are proven results with using quality additives. If the ounce or 2 of LX4 helped on the 30 gallons to lubricate the CP4, then why can the same not be said for boosting cetane and dispersing contaminants? Sure, it is a feel good and most of the time not needed.. but I know that when I run across that bad fill up of fuel, adding the EDT or (HS Diesel Extreme every 5000km's) to the tank will and has helped some. I pride myself on having an excellent butt dyno, vision and ears.. watching the rpms flutter and what feels like in a gas car when timing is pulled or when you hear ''not the same sound'' your used to when doing a pull.. makes me think fuel quality matters and certain high quality additives can make a difference.
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I think the concern for some is, self included, are the additives in the treatment causing any harm to the emissions system components? That's the question I ask myself.
 
I have used additives forever . I have passed many trucks whose fuel filters plugged up in cold weather waiting for a wrecker . I use it year around . Have never heard of a truck emissions getting plugged by it . Taking the sulfur out didn't do anything to improve the lubrication qualities of the fuel either. If u used it for the CP4 because you thought it would keep the pump from getting wasted why not the the replacement ?
 
Brutal_HO said:
I think the concern for some is, self included, are the additives in the treatment causing any harm to the emissions system components? That's the question I ask myself.
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I think that to get to the bottom of anything where the possibility of an additive contributing to a failure should have some substantiated claim like an ingredient commonly found in fuel additives that when sent through the EGR has a negative effect. Or what exactly do the emissions equipment have to deal with that is worse for it than straight fuel alone? Similar to saying that something is bad for ones health.. until there is a proven ingredient or reasonable proof of that exact thing causing harm.. anyone can just attribute anything to other underlying issues that may not be related at all.
 
Some states have mandatory emissions testing after some vehicle age? We would have heard of a problem if there is one.
 
My local high volume fuel station advertises that their diesel is treated with power service already. I would think it must be emissions friendly if the station can treat all their diesel supply that way.
 
I know its partially a sponsorship deal but I believe Cummins recommends PS for the 6.7
I assume the liability would be huge if there were issues with additives.
 
I used to always use EDT from Hotshot every tank. Quite frankly I can't really see a difference other than how the exhaust smells (seriously). Now all I will do is run treatment every few tanks in my aux tank to keep the inside of it clean.
 
If I'm filling up at a TA/Petro, their Diesel tends to be less expensive, ergo less additives, and potentially bigher Bio-Diesel blend. So I'll add in EDT between 2-3oz/50Gal. Filling up at Loves/Pilot/FlyingJ/Sams Club, I'll put in none, or maybe 1oz/50Gal.
 
Jackb60 said:
I know its partially a sponsorship deal but I believe Cummins recommends PS for the 6.7
I assume the liability would be huge if there were issues with additives.
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Its not sponsored its the only one that is approved by cummins though
 
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