Originally Posted By: dnewton3
Where's the credible documented proof that any of this matters?
Where's the credible documented proof that using a "better" filter assures "better" protection to a degree that is discernable in wear data?
Here is the list of evidence (choose to believe or not) which makes one think a few extra bucks on a superior 4548-12 oil filter is worth it:
1. SAE Study
http://papers.sae.org/881825/ also cited
http://www.amsoil.com/techservicesbullet...gine%20wear.pdf
2. Observations of the engineering trend that more modern vehicles specify better filtering,... i.e, early engine designs (
3. Articles like
http://www.machinerylubrication.com/Read/29114/dirt-holding-capacity and others similar, point to how reducing grit inside an engine or machine helps reduce wear.
4. Seeing Free Abrasive Lapping, as a machining process, produce wear.
5. Accounts of 40,000 mile oil change intervals like
http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3399277/Amsoil_0W-30_41K_OCI_w/bypass_ using a synthetic & better filtration.
6. Accounts of fleet benefits from 3-micron-level oil filtering ( i.e,
http://www.machinerylubrication.com/Read...er-in-fleet-ops and
http://fleetowner.com/equipment/news/california-city-fleet-oil-filters-0701 to cite just a couple.
7. & Finally, I don't know of anyone who wants
more particles running around inside their engines, certainly not these guys:
http://longitudediscovery.com/TheGreatMobilHoax/index.htm
Conclusion: A few extra bucks is worth it, and
no evidence suggests that less filtering is better. For example, MicroGard MGL57090 is $5, Fram ToughGuard TG8765 $10, not much diff in price, better ISO 4548-12 performance (80% vs. 99% @ 20m).