It helps. No guarantees though.

Using a good additive in addition to a lift pump, especially one with added filtration and water separation, will be about the best you can do to help make sure the pump has the best chance of lasting. Filling up at high traffic fuel stations also is a good thing.

 

Yeah, that's what I've been gathering from all of the threads on this I've been reading. Most of those threads were a few years old so I'm just checking if there's anything new. So what are some of the better additives here in 2020? I've run DieselClean every few tanks in my trucks since about 2004. Is there anything better?

I really appreciate the reply.

John

 

There are a lot of good additives.

I personally use optilube XPD every tank. I run a slightly heavier dose. Basically run the winter dosage year round. I have a cp3 now, but still run it every tank.

Hot shots, power service, among others, are all good as well. Main thing is added lubrication.

 

Lift pump, two filters and XPD every tank for me.

 

Just bought a 2002 with 71K miles and this Guy was annul about oil changes and services. Big concerns are turbo and injectors. Started with fuel additive, but would like to know more about lift pump! Any quidance?

 

Which ever additive you choose, you have to add it with every tank. Every few means that you are only adding lubrication every few tanks and running without more then you are with.

I run Power Service Diesel Kleen every tank in mine. Hoping to not have to do the CP4 again. Also have added a Fass Titanium lift pump and use Donaldson filters.


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Which ever additive you choose, you have to add it with every tank. Every few means that you are only adding lubrication every few tanks and running without more then you are with.

I run Power Service Diesel Kleen every tank in mine. Hoping to not have to do the CP4 again. Also have added a Fass Titanium lift pump and use Donaldson filters.


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Did u lose a cp4?

 

Some of the threads I've read have implied a lift pump will aid in the longevity of the factory pump.

There is zero proof that lift pumps increase CP4 life. I called around to all the major pump rebuilders and asked them what they thought. They all gave me the same answer.
1. WATER! Every failed CP4 they examined showed water ingestion. That's why it's so stupid to delete the factory fuel filter. The OEM Delco filter is the best water removing filter out there.
2. The situation is way over blown. For the amount of pumps out there, the failure rate is very small. That said, the CP3 pump is way more tolerant of water ingestion and rarely, if ever, fails.
3. Some people use additives to "Help" the pump. Some of these additives use water dispersant's and emulsifying additives, that actually run water through the pump and make the situation worse. Look at the label, and use a additive with the wording "demulsifier ". This will cause the water droplets to stick together forming bigger droplets that the filters can gather up before they enter the pump.
4. The extra filtration that a Lift Pump provides is only as good as the filters themselves. AirDog and Fass ship the cheapest filters possible to maximize their profit. The pump rebuilder guys said to throw them in the trash, and only use replacement filters from companies like CAT or Donaldson who specialize in filtration.

 

There is zero proof that lift pumps increase CP4 life. I called around to all the major pump rebuilders and asked them what they thought. They all gave me the same answer.
1. WATER! Every failed CP4 they examined showed water ingestion. That's why it's so stupid to delete the factory fuel filter. The OEM Delco filter is the best water removing filter out there.
2. The situation is way over blown. For the amount of pumps out there, the failure rate is very small. That said, the CP3 pump is way more tolerant of water ingestion and rarely, if ever, fails.
3. Some people use additives to "Help" the pump. Some of these additives use water dispersant's and emulsifying additives, that actually run water through the pump and make the situation worse. Look at the label, and use a additive with the wording "demulsifier ". This will cause the water droplets to stick together forming bigger droplets that the filters can gather up before they enter the pump.
4. The extra filtration that a Lift Pump provides is only as good as the filters themselves. AirDog and Fass ship the cheapest filters possible to maximize their profit. The pump rebuilder guys said to throw them in the trash, and only use replacement filters from companies like CAT or Donaldson who specialize in filtration.

A couple of corrections.

Additives are strongly advised so as to replace the lubricity that is lost when diesel is further refined to remove the sulphur. That lubricity helps the pump as well as the injectors.

Lift pumps are added because the duramax is the only diesel that does not use some type of a fuel pump in or near the fuel tank, instead relying on the injector pump to act as a lift pump. An additional benefit to doing a lift pump is the ability to add 2 additional filters into the fuel system, with one being a dedicated water separator. I will agree that removing the original fuel filter is not a very smart move. But it’s stock location does make it unnecessarily difficult to replace and recommend relocating that fuel filter.

I recommend Donaldson filters as well, but there are several great options available.


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On my lml I did the air dog 165 and for piece of mind buy exergy cp4 filter “if” your cp4 grenades it’ll save your fuel system

 

How hard was it to install the Exergy filter?


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1bigK being honest I had my mechanic that’s done all my trucks to install it. The filter I want to say is 250-300$ range. He installed it when he did the rest of my build. I turned my friends to the filter that said it wasn’t hard to install a few hours. Well worth the money either way.

 

Bosch the maker of the pump in the lawsuit said that they made it for Europe diesel standards and European diesel has more lubrication than US standards. Therefore the added lubrication is definitely needed. That being said our fuel has enough to lube that pump fine if there is no water and the fuel is cold hints the fuel cooler in front of the fuel tank. If you keep your tank 3/4 full or 1/2 full at all times (not great for the guy working paycheck to paycheck) and every now and again use a additive then you will probably be fine but thats not the real world so take care of it as much as you can and count your blessings if it does grenade you have the money to fix it or you have that screen. I have heard alot of those screens being installed but I have never heard of a failure with the screen so I dont know if they work or not

 

The real ignorant part of the USA versus European diesel fuel standards is-----European diesel fuel has less sulfur in it than US diesel fuel but has more lubricity in it.

Your good old EPA has fornicated you again. Yes, they could have mandated a diesel formulation that had less sulfur and more lubrication in it and about a 1% CP4 failure rate, instead of a 7% or higher failure rate.

 

The real ignorant part of the USA versus European diesel fuel standards is-----European diesel fuel has less sulfur in it than US diesel fuel but has more lubricity in it.

Your good old EPA has fornicated you again. Yes, they could have mandated a diesel formulation that had less sulfur and more lubrication in it and about a 1% CP4 failure rate, instead of a 7% or higher failure rate.

Leave it to the feds to get stuff backwards and we get screwed. They are so predictable that way one might wonder if they (the feds) might be lesdyxic.


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I've had my 06 LBZ since 2011 and had many issues with towing on hot days up the steeper passes. Using additive initially with no help. I finally bit the bullet a couple weeks ago with a Kennedy lift pump and it solved all my problems. 155k miles.

 

You likely needed to replace the rubber sections of your fuel lines. The pump on the duramax pulls a vacuum on the fuel lines which increases under load and as your lines age and get hot they can collapse easier which kills your power. Fresh hoses will typically eliminate this issue.
I have an LBZ as well with 190K miles and was suffering the same power loss issues during the hot AZ summers pulling a fifth wheel up mountain grades. After replacing the lines near the fuel filter head, I haven’t suffered a similar issue.

 

I am a rich soul and I am not in the weeds and you know it. Put the formulations down and prove me wrong, but you have a problem, you cannot. So you want me to stop posting because I am embarrassing you. One sentence you tell to look things up, 7 words later, you tell me of a "Need to spend less time "Googling" and learning about the actual processes being performed". Make up my mind for me, but I do not "Googling", and just state facts.

 

There are numerous white papers and industry studies written about the hydrodesulfurization process used for the refining of ultra-low sulfur diesel. There you go have fun learning. Let us all know what you find out!

 

Wow the argument over spelling is getting too political. Spelling is not what we are talking about so Karen if you need something to complain about you should go be a GM boy on a Ford or dodge forum that will give you enough. Damn for real he.was just saying. I didn't know that but looking into it for sure I know there are smarter, bigger, better guys out there but I'm not calling them out on their spelling and guess what you can "spell" it either way so let's keep it nice dips#it

 

Wow, you want to keep things nice and nonpolitical? Yet you start name calling someone Karen and use the word "dips#it"? It would help if his postings made some sort of sense, besides telling people they are out in the weeds, have eggs on their face etc. Damn for real, cool down. And prove me wrong.

 

Stoichiometry fight 🍿🍿🍿

 

Lol this has to be the dumbest stuff I've ever read and I have a 6 year old and a 2 year old. Try to keep it together we are all here for the same reason and yeah I found the names Karen (wanting to find something to complain about) and dips#it (not wanting to comment and help or inform but rather would like to correct things that don't need corrected) totally fitting. So I'm sorry if I offended you but ill still sleep tonight dont you worry about that and not sure how that was political but I'm on board

 

Well, I guess that makes you both of the names you called because of the exact reasons you stated, totally fitting, it fits you to a "T". Poor kids, LOL with you for a role model. And yet no one has proven my first statement wrong.

 

Yeah I say "those poor kids" everyday cause they have to grow up in a world like this with so many people complaining about stuff that has no reason to be complained about. A world where someone can get a million dollars for the hot coffee being too hot but you don't need to worry about them they'll be fine. Next Nobody was arguing with you... the epa sucks and things could be different but guess what... they're not and thats something you can't change so find the grace in it. Next I'll be your karen if you need one and I've been called worse than dips#it by better so I'll be that for you too no worries there. Next my dad could beat up your dad! So have a good night love you too

 

Let us talk about the OP.. I am thinking about getting a lift pump. What are the personal experiences of adding a lift pump.. Did it do everything that the pump manufacturer says it does?
People be nice!

 

Check out Kennedy Diesel lift pumps. John is very helpful and will answer your questions. Kennedy Diesel

 

will do