Additives

[driventoadventure]

Anecdotal: In my 6.0 PSD Hot Shot Secret and (I can't remember the name of the other additive, but not Power Service) absolutely made a huge difference in lubricity. Before I replaced my injectors (because the first owner never maintained it right, literally never changed the fuel filter in 100k miles) the performance and injector noise were both measurably and noticeably different. Ever since then I am believer and I also run the Hot Shot Everyday in mine because the fuel pumps are known to grenade. This is also why I almost never go below a quarter of a tank because from everything I have read about 'bullet proofing' the pump it is due to a recirc valve/circuit that can trigger and recirc fuel whose lubricity is degraded from already having circulated through the pump.

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[Deleted member 59498]

So these additives can help the pump from going super nova?

 

[Terpsmandan]

So these additives can help the pump from going super nova?

That and proper maintenance. Like @driventoadventure stated, a lot of people neglect it and expect their car to be like an appliance. Last time I had an issue with a fuel filter in a gasoline car was an 84 Audi 4000 in 1997. I changed my fuel filter at 10k and hers at 20k and I intend to change them every 10k on top of adding LX4 and EDT every fill up.

 

[zouch]

these CP4 pumps are popping at just a few thousand miles on them (like mine and several others here and elsewhere have done). while an additive might help in the long run, the problem is obviously not only the lack of lubrication in the ULSD that the US uses now.

to further add to the the confusion, be advised that when i had the next problem with mine, one of the first things the dealer did was try to blame the fuel and "additives" until i pointed out the only additive i'd used since they replaced the entire fuel system was the Mopar addtiive that i'd bought from them. (the next thing they wanted me to do was to run a couple of tanks through it to "get all the additives out",..)

 

[TucsonDweller]

these CP4 pumps are popping at just a few thousand miles on them (like mine and several others here and elsewhere have done). while an additive might help in the long run, the problem is obviously not only the lack of lubrication in the ULSD that the US uses now.

to further add to the the confusion, be advised that when i had the next problem with mine, one of the first things the dealer did was try to blame the fuel and "additives" until i pointed out the only additive i'd used since they replaced the entire fuel system was the Mopar addtiive that i'd bought from them. (the next thing they wanted me to do was to run a couple of tanks through it to "get all the additives out",..)

And if you didn’t use additives they would blame the problem on not using them and/or water/rust in the system. I think most dealerships believe their purpose is to deny warranty until the customer proves beyond a reasonable doubt they are due the warranty claim.

 

[zouch]

i agree that they seem to do anything they can to deny a warranty claim. Corporate doesn't really encourage the Dealers to provide any Customer-friendly support there, and doesn't make it easy for the Dealers to manage profitably, either.

looking for something wrong with the fuel to blame a failure on was definitely part of the routine, but they'd have a hard time blaming a HPFP failure on a failure to uses Additives since the Owners Manual literature advises to *not* use any.

And if you didn’t use additives they would blame the problem on not using them and/or water/rust in the system. I think most dealerships believe their purpose is to deny warranty until the customer proves beyond a reasonable doubt they are due the warranty claim.

 

[DaltonGang]

Just a little info about my additives experience.
I have owned my 2006 Dodge 2500 4x4 w/5.9 Cummins, since new. I have noticed, since diesel fuels have changed, to lower sulfur, the mpg has gone down on it. From 24 mpg highway, to 20-21 mpg. I have tried many different fuel additives, and Howes works great, but it is expensive and harder to get a hold of.
So, Lucas Injector and Fuel treatment is what I have used more often.
I rarely drive the truck, but did on a long family vacation. Several hundred miles into it, and my first fill-up(1/2 tank), I decided to buy some Lucas. The injectors were very loud, and the engine idled a little rough. The mpg went from 21 to 25.5 immediately, with the exact same driving, at 70mph. The engine smoothed out, and was significantly quieter.
In the very hilly areas of Arkansas, I had to drive 50mph, because of traffic, and speed limits, for several days. My truck was averaging 29 mpg, unloaded.
So, yes, I am a huge believer in diesel fuel additives.

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