6.7 Fuel pump questions and interesting advice received

[road turtle]

2022 6.7L  I keep hearing about fuel pump grenading and costing 15k and up to repair.  How common is this?

 

I've been running Opti-Lube, at a rate a little less than recommended.  Am I wasting my money, or does it really work?

 

Talked to a 40 year diesel mechanic/shop owner yesterday and he said CP4 has made him wealthy.  He said it's not if, but when CP4 will fail.  His recommendation, the cheapest 2 cycle oil you can find and add 1/2 gallon to every full fillup.  I questioned that he really meant 1/2g, and he said absolutely, 1/2g.  Does that make any sense?  He also said his shop is looking at a replacement fuel pump, but unfortunately didn't have the info on him, it's back at his shop.  Also said to avoid bio diesel... isn't all fuel bio diesel?

[ScottK1]

If it were that common, there would be class-action lawsuits about it.  I think the best solution is adding a filter after the pump to protect the fuel system if it fails.  I'm still under warranty, so haven't worried about it yet.

[road turtle]

On 11/4/2024 at 1:39 PM, ScottK1 said:

If it were that common, there would be class-action lawsuits about it.

I do have a friend that did sue Ford and won.  I don't recall his MY superduty, but it was several years ago.

[lcseds]

The stories I hear about CP4 issues.....jeeze. If they were that bad, Ford wouldn't use them. They don't want to fix any more trucks than they need too (warranty and extended warranty). Once in a while I hear about an owner with an issue. But 95% are "My cousin heard that his uncle knew this guy, who has a friend......." stories.

[IA Diver]

Do not run 2 cycle oil. Do use Bio. As stated, there are failures but the number is highly exaggerated. There was some info posted over on FTE, that additives can strip the coating off of the water separator and let water through. I often wonder how many failures happen that have been caused by contaminated fuel, ie: DEF or gas. If you do run an additive, use one that separates the water so the filter can do it's job, not an additive that emulsifies it.