Is CP4 still a problem?
Lead Driver
Joined: Feb 2022
Posts: 7,996
Likes: 4,063
Yep have looked at Schaeffer's before... Never used it but believe it to be a premium oil for sure. One of my friends in the Club sent me a link about Triax. When I get a chance and find it, I'll PM you.
Just had an "issue" recently... I just got done fueling up, started the truck back up and immediately got a "Low Oil Pressure" warning... my heart dropped...I drove to the closet auto parts store, not far away, shut her off. I checked the oil and it was low on the stick but definitely on the stick at the lower notch. I bought a gallon of oil T4 10w30 and put in a quart. That put it halfway in the cross hatched area. I'm kind of pissed because I was going to have the oil analyzed and may still on this upcoming oil change... The warning still came back on but was relieved it wasn't because the oil was way low.
I looked online and found this is a common problem with the 6.7 Powerstroke. I bought a new oil pressure sensor switch but haven't put it in yet. It went on and off for a few days but is now off. I bought the Carquest one that has the lifetime warranty... I was going to go with the Motorcraft one but decided on the lifetime warranty instead. I'm now convinced that it was an electrical gremlin (the sensor itself) and not the lower oil level as that's not low enough in opinion to bring on the sensor... especially since it still came on after the quart was added and was very intermittent also.
Just had an "issue" recently... I just got done fueling up, started the truck back up and immediately got a "Low Oil Pressure" warning... my heart dropped...I drove to the closet auto parts store, not far away, shut her off. I checked the oil and it was low on the stick but definitely on the stick at the lower notch. I bought a gallon of oil T4 10w30 and put in a quart. That put it halfway in the cross hatched area. I'm kind of pissed because I was going to have the oil analyzed and may still on this upcoming oil change... The warning still came back on but was relieved it wasn't because the oil was way low.
I looked online and found this is a common problem with the 6.7 Powerstroke. I bought a new oil pressure sensor switch but haven't put it in yet. It went on and off for a few days but is now off. I bought the Carquest one that has the lifetime warranty... I was going to go with the Motorcraft one but decided on the lifetime warranty instead. I'm now convinced that it was an electrical gremlin (the sensor itself) and not the lower oil level as that's not low enough in opinion to bring on the sensor... especially since it still came on after the quart was added and was very intermittent also.
Laughing Gas
Joined: Nov 2007
Posts: 824
Likes: 179
I used Mobil Delvac in my 6.0PSD for almost 200k miles and it was an excellent oil for the 6.0PSD. Was a bit disappointed when Mobil and Chevron decided to reduce Zinc/Phosphorous to gas engine specifications in their diesel oil API CK4 spec, which made absolutely zero sense, but looks like they may have increased it now to get in align with the Ford Zinc/Phosphorous requirements.
Lead Driver
Joined: Feb 2005
Posts: 7,990
Likes: 2,681
From: The Great State of Texas
I believe you are referring to the Delvac 1300. I used that oil exclusively until Mobil decided it would be dual spec oil (car + diesel) and removed anti-wear additives. The 15w-40 Extreme is full synthetic and has over 1,100 ppm of additives across the board, no sacrifices made on that oil thankfully.
FTE Legend
Joined: Mar 2017
Posts: 31,979
Likes: 9,200
From: Western NY
I have a similar issue on my 20 year old Kubota. Normally the dash lights up when I first turn the key on for the oil pressure, but lately it is off until I crank it over then it flickers, comes on just as the engine starts and then turns off. Thinking it is time to replace the sending unit. It will be getting a complete fluid and filter change out this spring, so will tackle the OPSU at the same time.
, I'm good.
Cargo Master
Joined: Feb 2020
Posts: 2,277
Likes: 949
Schaeffer's is family owned and operated since 1839. My family has used their oils for many years with good success. My oil analysis results were always good and allowed for extended OCI's. I thought Triax seemed like a good product with some good reviews and very reasonably priced. My oil analysis with it was not bad, but you will definitely get nowhere near the OCI that Triax claims. Anyway my experiment with it is over and my next change will be with Schaeffers 5w-40. I still have some inventory of Triax to use up in my gas vehicles.
Fleet Mechanic
Joined: Nov 2005
Posts: 1,508
Likes: 87
From: North Carolina, Raleigh
I suppose the disaster kits can work,, but from the many post i have seen some state otherwise.. And having a 7.3L 2003 with some now 230K miles on the OEM pump I can tell you the difference between a CP4 failure and a HPOP failure are like 10K apart.. When a 7.3 pump goes it just stops running most of the time.. NO "**** the pants" type deal with injectors replace, lines, pump , and drop fuel tank to clean a 10-14K problem.
Ram ONLY used the CP4 for 2 yrs (2019 -2020) ,, GM dropped them after only 5 yrs, (2011 to 2016) but Ford continues to use them to the demise of many a owner. Yes many do go miles with no issues for sure. but when you see most of the issues on complaints sites is death wobble and fuel pump issues it kinda make sense it the biggest issues for many owners.
Not mention the lawsuits, ongoing lawsuits against Ford and GM about the fuel pumps,, Hell Ram is currently in a middle of a nationwide recall to replace the CP4 pumps with a CP3 hybrid no less.. Something ford and GM did do.
Would i love to buy a ford diesel,, right now NO.. especially with the cost of diesel vs gas the 7.3L is running to the front.. and NO to the CP4 pump..
Ram ONLY used the CP4 for 2 yrs (2019 -2020) ,, GM dropped them after only 5 yrs, (2011 to 2016) but Ford continues to use them to the demise of many a owner. Yes many do go miles with no issues for sure. but when you see most of the issues on complaints sites is death wobble and fuel pump issues it kinda make sense it the biggest issues for many owners.
Not mention the lawsuits, ongoing lawsuits against Ford and GM about the fuel pumps,, Hell Ram is currently in a middle of a nationwide recall to replace the CP4 pumps with a CP3 hybrid no less.. Something ford and GM did do.
Would i love to buy a ford diesel,, right now NO.. especially with the cost of diesel vs gas the 7.3L is running to the front.. and NO to the CP4 pump..
Disaster prevention kit is $450, if the pump actually fails it cosots ~$1000 to replace. Whether or not it fails is TBD. $1450 to replace the pump (including the DPK cost) if you can do the work yourself, even cheaper. Not much different than owning a 7.3 that has an hpop failure.
Cargo Master
Joined: May 2018
Posts: 2,442
Likes: 993
I suppose the disaster kits can work,, but from the many post i have seen some state otherwise.. And having a 7.3L 2003 with some now 230K miles on the OEM pump I can tell you the difference between a CP4 failure and a HPOP failure are like 10K apart.. When a 7.3 pump goes it just stops running most of the time.. NO "**** the pants" type deal with injectors replace, lines, pump , and drop fuel tank to clean a 10-14K problem.
Ram ONLY used the CP4 for 2 yrs (2019 -2020) ,, GM dropped them after only 5 yrs, (2011 to 2016) but Ford continues to use them to the demise of many a owner. Yes many do go miles with no issues for sure. but when you see most of the issues on complaints sites is death wobble and fuel pump issues it kinda make sense it the biggest issues for many owners.
Not mention the lawsuits, ongoing lawsuits against Ford and GM about the fuel pumps,, Hell Ram is currently in a middle of a nationwide recall to replace the CP4 pumps with a CP3 hybrid no less.. Something ford and GM did do.
Would i love to buy a ford diesel,, right now NO.. especially with the cost of diesel vs gas the 7.3L is running to the front.. and NO to the CP4 pump..
Ram ONLY used the CP4 for 2 yrs (2019 -2020) ,, GM dropped them after only 5 yrs, (2011 to 2016) but Ford continues to use them to the demise of many a owner. Yes many do go miles with no issues for sure. but when you see most of the issues on complaints sites is death wobble and fuel pump issues it kinda make sense it the biggest issues for many owners.
Not mention the lawsuits, ongoing lawsuits against Ford and GM about the fuel pumps,, Hell Ram is currently in a middle of a nationwide recall to replace the CP4 pumps with a CP3 hybrid no less.. Something ford and GM did do.
Would i love to buy a ford diesel,, right now NO.. especially with the cost of diesel vs gas the 7.3L is running to the front.. and NO to the CP4 pump..
Lead Driver
Joined: Feb 2005
Posts: 7,990
Likes: 2,681
From: The Great State of Texas
I suppose the disaster kits can work,, but from the many post i have seen some state otherwise.. And having a 7.3L 2003 with some now 230K miles on the OEM pump I can tell you the difference between a CP4 failure and a HPOP failure are like 10K apart.. When a 7.3 pump goes it just stops running most of the time.. NO "**** the pants" type deal with injectors replace, lines, pump , and drop fuel tank to clean a 10-14K problem.
Ram ONLY used the CP4 for 2 yrs (2019 -2020) ,, GM dropped them after only 5 yrs, (2011 to 2016) but Ford continues to use them to the demise of many a owner. Yes many do go miles with no issues for sure. but when you see most of the issues on complaints sites is death wobble and fuel pump issues it kinda make sense it the biggest issues for many owners.
Not mention the lawsuits, ongoing lawsuits against Ford and GM about the fuel pumps,, Hell Ram is currently in a middle of a nationwide recall to replace the CP4 pumps with a CP3 hybrid no less.. Something ford and GM did do.
Would i love to buy a ford diesel,, right now NO.. especially with the cost of diesel vs gas the 7.3L is running to the front.. and NO to the CP4 pump..
Ram ONLY used the CP4 for 2 yrs (2019 -2020) ,, GM dropped them after only 5 yrs, (2011 to 2016) but Ford continues to use them to the demise of many a owner. Yes many do go miles with no issues for sure. but when you see most of the issues on complaints sites is death wobble and fuel pump issues it kinda make sense it the biggest issues for many owners.
Not mention the lawsuits, ongoing lawsuits against Ford and GM about the fuel pumps,, Hell Ram is currently in a middle of a nationwide recall to replace the CP4 pumps with a CP3 hybrid no less.. Something ford and GM did do.
Would i love to buy a ford diesel,, right now NO.. especially with the cost of diesel vs gas the 7.3L is running to the front.. and NO to the CP4 pump..
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Lead Driver
Joined: Feb 2005
Posts: 7,990
Likes: 2,681
From: The Great State of Texas
Looks like Hot Shot secrets is blended with demusiliers as well.
How Does Water Get Into Diesel Fuel? (hotshotsecret.com)
How Does Water Get Into Diesel Fuel? (hotshotsecret.com)
Here's some fuel additive test that may or may not apply to extending the life of the CP4.2, but the rust test is a pretty telling.
FTE Legend
Joined: Mar 2017
Posts: 31,979
Likes: 9,200
From: Western NY
I suppose the disaster kits can work,, but from the many post i have seen some state otherwise.. And having a 7.3L 2003 with some now 230K miles on the OEM pump I can tell you the difference between a CP4 failure and a HPOP failure are like 10K apart.. When a 7.3 pump goes it just stops running most of the time.. NO "**** the pants" type deal with injectors replace, lines, pump , and drop fuel tank to clean a 10-14K problem.
Ram ONLY used the CP4 for 2 yrs (2019 -2020) ,, GM dropped them after only 5 yrs, (2011 to 2016) but Ford continues to use them to the demise of many a owner. Yes many do go miles with no issues for sure. but when you see most of the issues on complaints sites is death wobble and fuel pump issues it kinda make sense it the biggest issues for many owners.
Not mention the lawsuits, ongoing lawsuits against Ford and GM about the fuel pumps,, Hell Ram is currently in a middle of a nationwide recall to replace the CP4 pumps with a CP3 hybrid no less.. Something ford and GM did do.
Would i love to buy a ford diesel,, right now NO.. especially with the cost of diesel vs gas the 7.3L is running to the front.. and NO to the CP4 pump..
Ram ONLY used the CP4 for 2 yrs (2019 -2020) ,, GM dropped them after only 5 yrs, (2011 to 2016) but Ford continues to use them to the demise of many a owner. Yes many do go miles with no issues for sure. but when you see most of the issues on complaints sites is death wobble and fuel pump issues it kinda make sense it the biggest issues for many owners.
Not mention the lawsuits, ongoing lawsuits against Ford and GM about the fuel pumps,, Hell Ram is currently in a middle of a nationwide recall to replace the CP4 pumps with a CP3 hybrid no less.. Something ford and GM did do.
Would i love to buy a ford diesel,, right now NO.. especially with the cost of diesel vs gas the 7.3L is running to the front.. and NO to the CP4 pump..
It's here in Part 1.
Here in Part 2 they examine the rest of the system.
Just found this one, it's a quick recap of the first 2 videos.
Last edited by Overkill2; Dec 4, 2022 at 11:32 AM. Reason: Add link
Cargo Master
Joined: Aug 2012
Posts: 2,875
Likes: 955
From: Kaufman TX
They aren't all made the same, and some of the shortcomings of the earlier revisions have been better addressed in later ones. There are no sure things in life, but running a current revision CP4 bypass the ability for failure to extend beyond the pump is virtually eliminated. Hypothetically material could still back-feed through 14 inches of line and up hill and upstream but in reality I'm doubtful that it's possible. If a person was still worried though they could add a 1 way valve in the hose. The only other avenue would be particles making it through 3 filters. Yeah it could happen but I'd bet on the heat death of the universe before it did.
Lead Driver
Joined: May 2021
Posts: 5,939
Likes: 3,540
From: Uh oh, CA
S&S has a video where they drive a 6.7 with a damaged CP4.2 that they intentionally damaged one of the rollers, then put it back together and reinstalled it, with their Gen 2 kit, where the hose is longer than the Gen 1 kit, and they actually drove the truck in that condition.
It's here in Part 1.
https://youtu.be/F-vZEH1yEs8
Here in Part 2 they examine the rest of the system.
https://youtu.be/ZHuA7VbXLY0
Just found this one, it's a quick recap of the first 2 videos.
https://youtu.be/hT0DbvrlN6o
It's here in Part 1.
https://youtu.be/F-vZEH1yEs8
Here in Part 2 they examine the rest of the system.
https://youtu.be/ZHuA7VbXLY0
Just found this one, it's a quick recap of the first 2 videos.
https://youtu.be/hT0DbvrlN6o
Laughing Gas
Joined: Nov 2007
Posts: 824
Likes: 179
I talked to a knowledgeable service advisor at my local dealer, not a small one either. They stated most failures they see are due to DEF or unleaded in the tank, user error. They said it is rare for them to see CP4 failure outside of those reasons.
They also said a DPK would not impact the warranty unless the kit directly causes the damage.
They also said a DPK would not impact the warranty unless the kit directly causes the damage.
FTE Legend
Joined: Mar 2017
Posts: 31,979
Likes: 9,200
From: Western NY
I talked to a knowledgeable service advisor at my local dealer, not a small one either. They stated most failures they see are due to DEF or unleaded in the tank, user error. They said it is rare for them to see CP4 failure outside of those reasons.
They also said a DPK would not impact the warranty unless the kit directly causes the damage.
They also said a DPK would not impact the warranty unless the kit directly causes the damage.
But this does go along with what the Ford tech who works at my buddy's shop said -- that most of the time it's DEF or maybe gas that someone puts in. But we do know that moisture contaminated fuel will and has taken out CP4.2s before.
Cargo Master
Joined: Feb 2020
Posts: 2,277
Likes: 949
The implementation of the CP4.2 on GM and Ram was different than Ford. GM chose to not include a lift pump like Ford and forced the CP4.2 to pull fuel from the fuel tank. We now know the CP4.2 doesn't tolerate air in the fuel so that was a bad decision by GM. RAM used a asymmetrical CP4.2 pump that was a disaster and then after a year went to a symmetrical style pump like Ford's version but the <acronym title="Page Ranking">PR</acronym> damage was already done. To date I don't personnally know or met someone who owns a 6.7PSD that had CP4.2 pump failure, but know/met several people who experienced CP4.2 failures on Rams and Duramax trucks. As a matter of fact I traveled to Atlanta earlier this week and the guy I shared a rental car with just recently experienced a CP4.2 pump failure on his Duramax truck.