Extended OCIs impact on Wear

[Roberts9156]

Please help me understand. I’ve heard multiple times that a lot wear is from <15 micron particle size, which is mostly not caught by oil filters. Yet it seems like many people are confident in going extended OCIs just knowing the oil stays in grade and fuel dilution.

Does the wear rate not accelerate the longer oil is run, and why?

 

[GW.]

IMO the longer the oci the more important filtration is. A higher efficiency filter will catch more of the smaller particles. That said I don’t do extended oci’s and still use high efficiency filters.

 

[bigjohn]

I'm just not doing long OCI's any more..... My Diesels, which are 10k... I am now changing at 7,500. My gassers that are 7-8k OCI's... I am changing at 5k.

Why???? I had a turbo failure at 9,500 on the OCI and my mechanic believes it was a lube issue. That was $8,000. I don't give a rip what anyone's opinions are on this matter.... I am reducing my OCIs'.

For what it is worth, I have always run top shelf oil and expensive filters.

I have a brand new Jeep Wrangler Rubicon with the 2.0L Turbo and it will be changed every 5k miles.