Oil Filter Change vs Engine Wear

[finalyzd]

Originally Posted By: Gene K
Originally Posted By: finalyzd
Originally Posted By: Tempest
New filters don't filter as well as used filters. This is very odd and those charts aren't very helpful.

Dropping the filter also does remove some oil.


I keep hearing this statement. How do you know this? Or just theory?


Ive seen a fair number of studies through the years of filter media (not always specific to oil). Essentially the filter will filter better and better up to the point it causes the bypass to open. Thats because a layer of dirt helps close off a direct route through the pores becoming in essence a prefilter.


Do you change the filter each oil change?

 

[Tempest]

I think buster went 28K miles on an EAO and the UOA's didn't look any different.

 

[Spector]

When I was doing a lot of UOA on my cars I tried going 12,000 mile OCI and did a UOA and then another 12,000 ( new oil)but changed the filter half way. No difference in the UOA!!!