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Old 07-28-2017, 04:16 AM   #1
rrjernigan
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Diesel Additives

Did a search but did not find much. I have a 2017 F350 DRW. I see a few posts about additives like Diesel Kleen. Should I be adding something to my diesel? I've owned a few diesel trucks but have never used additives. I also know very little about engines.
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Old 07-28-2017, 04:24 AM   #2
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I have a 37 gallon tank and add 16oz of Diesel Kleen in every (full) fill-up.. 1/2 tank gets 8oz...
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Old 07-28-2017, 05:08 AM   #3
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My long term experience is more with diesel cars, and the most important thing is being religious with maintenance, much more so than with gas engines. Never delay or forget fuel filter replacement, along with everything else. Additives are a nice-to-do, not a need-to-do, nor a substitute for maintenance. I also think it's important not to baby them like a gasser - whether car or truck, diesels love to WORK.

Having said that... I've been using PowerService for years in my diesels... personal vehicles, I'm not some sort of fleet expert. 15 years ago I put half a mill on a VW diesel in 5 years and my engine was as clean and tight as day 1, and PS was a part of that.

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Old 07-28-2017, 06:53 AM   #4
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My concern is for my older, 24V Cummins. The injection pump was designed before ultra low sulfer diesel was mandated by the feds. The lubricity of the ULSD was reduced, as a result, so I add Diesel Kleen according to the ratio recommended on the jug to compensate. Diesel Kleen also cleans the fuel system and increases fuel cetane (Google it). Walmart seems to have the best price, BTW.

While not really a snake oil guy, there are additives (snake oils) in gas, diesel and oils for our rigs and other things in life. I plan to keep my truck for awhile, so scheduled maintenance and proper injection pump lubricity is important to me. If you regularly trade in your vehicles, you probably won't see the benefit of the diesel additives.

I also carry a spare fuel filter in the truck (and have never needed it), but others have with a bad refuel of diesel. I just don't want to be stuck in "east dying cactus" on a weekend without a spare.
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Old 07-28-2017, 07:22 AM   #5
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Exactly what PowerService does. Just an alternative.

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Old 07-28-2017, 07:47 AM   #6
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Exactly what PowerService does. Just an alternative.

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Yep. Heard good things about PowerService. Diesel Kleen is just more easily available for me.

www.bobistheoilguy.com (I think) did a comparison on diesel additives. Some work better than others and cost more/less than others. I think the important thing is to get one that provides lubricity, cleans the system and increases cetane, rather than just one that is just a cetane improver.
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Old 07-28-2017, 07:59 AM   #7
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Have 150k on my 2011 dmax, never use additives. I have added a FASS system and change all three fuel filters every 25k miles. Runs like the day I bought except quieter due to the FASS system removing the microscopic air bubbles which create injector noise.
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Old 07-28-2017, 08:39 AM   #8
Ken / Claudia
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I normally dump in a bottle of something once a year. diesel kleen mostly. Here's a question for anyone. I use it before a long trip. Thinking why put it in a tank that may sit for a month. My way it runs thru the engine that day under a load. Good /bad does it make any difference?
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Old 07-28-2017, 08:53 AM   #9
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Since Texas allows up to 20% Bio-diesel, and hen's teeth are easier to find than straight #2 fuel... most stations are 5% to 10%...

With Cetane rate all over the board, I run it in every tank...

I could hear, see and feel the difference within the first tank.. Quieter, smoother and better mileage..
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Old 07-28-2017, 09:35 AM   #10
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Locally I seldom use any additive since NY only allows up to 10% biocrap. I do use the summer Diesel Kleen when we are traveling since some of the Midwest stations specifically state that there is 20% bio which in turn reduces my towing fuel mileage from a respectable 11-12 mpg down as low as 9-9.5. I have read a couple articles that have said that in tests, that the 20% is no more then a WAG and it could be a higher percentage from stratification or even on occasion, less for the same reason. Supposedly bio negatively affects the cetane rating and can take it below 40 --- well let's say that a few ounces of an additive might just bring it up a bit. Most additives will also improve the lubricity of the fuel and maybe improve the life expectancy of those various tender models of Bosch HP fuel pumps that most late model diesel pickups now use.

Then there is the winter white jug of Diesel Kleen which will prevent waxing in sub zero temps. I do use this when we have a cold snap and need to leave my truck outside for some reason

There are several brands available but the Diesel Kleen brand is at every Walmart, NAPA and truck stop. I've wanted to try the Optilube and the Ford PM-22 version, but availability isn't that great.

Is it snake oil - beats me but it can't hurt anything and might actually help. My jury panel is still out
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Old 07-28-2017, 09:51 AM   #11
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I put 4 ounces of Ford PM-22 in every tank; Diesel Kleen and Power service should provide the same benefit. I'm not sure it is required, but I consider it cheap insurance. I have also installed an additional filter/water separator on the truck as insurance against getting a bad load of fuel.
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Old 07-28-2017, 10:29 AM   #12
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Originally Posted by Javi View Post
Since Texas allows up to 20% Bio-diesel, and hen's teeth are easier to find than straight #2 fuel... most stations are 5% to 10%...

With Cetane rate all over the board, I run it in every tank...

I could hear, see and feel the difference within the first tank.. Quieter, smoother and better mileage..
In my older car diesels I ran B80 and B100 all the time in summer. If it was good quality (not fly-by-night) it was actually very good for the older diesel engine, especially lubricity, but you lost cetane numbers - not alot but you would notice if you were a high mileage guy like I was. It cleaned the fuel system right up though. I always had to get braided steel fuel lines, but that's about it. I would run it every few tanks. I had also run straight canola oil a bit (only in summer) in my old 2003 VW tdi, and it ran fine, but it can do some nasty things to fuel filters over time if it isn't heated
so I didn't go full longhair hippy. My friends running used fryer oil were always replacing fuel system parts but they got free fuel.... Pyrrhic victory I think.
With the more modern fuel systems, I would have to think straight veggie oil is a recipe for disaster, like you might get laughed out of the repair garage.

Does the B20 create problems with the larger displacement diesels?

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Old 07-28-2017, 11:00 AM   #13
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It don't cost that much in comparison to the cost of the truck. Supposedly don't hurt anything. I'm trying to get in the habit of using it all the time. I definitely use it on the road when I fuel up at truck stops. They (Flying J) usually have 20% bio.
I hate truck stops.
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Old 07-28-2017, 12:18 PM   #14
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Looked into which additive would be best to replace the lubricants lost in the low sulphur fuels now required. Here is a link to a very detailed, scientific study on the different additives available. Would like to see what others think.
http://www.dieselplace.com/forum/76-...y-results.html
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Old 07-28-2017, 01:02 PM   #15
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I thought that Canonman's study was pretty old so I looked up two other studies and know what I found?
"2% REG SoyPower biodiesel HFRR 221, 415 micron improvement.50:1 ratio of baseline fuel to 100% biodiesel66.56 oz. of 100% biodiesel per 26 gallons of diesel fuel" took top honors in all three studies I found. Latest one was 2015.
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Old 07-28-2017, 01:22 PM   #16
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Quote:
Originally Posted by bsmith0404 View Post
Have 150k on my 2011 dmax, never use additives. I have added a FASS system and change all three fuel filters every 25k miles. Runs like the day I bought except quieter due to the FASS system removing the microscopic air bubbles which create injector noise.
Been thinking of this for awhile. A FASS Titanium system is on the schedule for next month.
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Old 07-28-2017, 01:27 PM   #17
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Originally Posted by Desert185 View Post
Yep. Heard good things about PowerService. Diesel Kleen is just more easily available for me.

www.bobistheoilguy.com (I think) did a comparison on diesel additives. Some work better than others and cost more/less than others. I think the important thing is to get one that provides lubricity, cleans the system and increases cetane, rather than just one that is just a cetane improver.
Well, falling through the cracks, Power Service makes Diesel Kleen.
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Old 07-28-2017, 01:30 PM   #18
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Originally Posted by Canonman View Post
Looked into which additive would be best to replace the lubricants lost in the low sulphur fuels now required. Here is a link to a very detailed, scientific study on the different additives available. Would like to see what others think.
http://www.dieselplace.com/forum/76-...y-results.html
The primary concern of this study was lubricity. As I mentioned before, I think if one were to use a diesel fuel additive it would be more productive to use one that provides lubricity, cleaning and a cetane increase.
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Old 07-28-2017, 01:33 PM   #19
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Originally Posted by Ken / Claudia View Post
I normally dump in a bottle of something once a year. diesel kleen mostly. Here's a question for anyone. I use it before a long trip. Thinking why put it in a tank that may sit for a month. My way it runs thru the engine that day under a load. Good /bad does it make any difference?
Better than nothing...like a bottle of Techron once a year in the wife's Volvo.
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Old 07-28-2017, 01:37 PM   #20
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Originally Posted by notanlines View Post
I thought that Canonman's study was pretty old so I looked up two other studies and know what I found?
"2% REG SoyPower biodiesel HFRR 221, 415 micron improvement.50:1 ratio of baseline fuel to 100% biodiesel66.56 oz. of 100% biodiesel per 26 gallons of diesel fuel" took top honors in all three studies I found. Latest one was 2015.
Thanks Jim
For some reason I couldn't find the 2105 study. We're traveling and not using our standard browser.
Appreciate your checking on this. I was pretty sure the results were the same.
Basically just a 1/2 gallon of Biodiesel per tankful. It's good fuel so you don't have to be overly critical of the mix ratio.
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