I'd like to add another factor here.....since we're talking about
oil filters, I recently learned that with the higher percentage of
synthetic blend and full
synthetic oils on the shelves, recommendations for
oil filters have changed, too. Apparently (or so I was told by a salesman at Advance Auto Parts) the
synthetic/synthetic blend oils require a filter that is rated to remove a very high percentage of particles....in fact, he told me to just go to the filter rack and find one with "99.9%" noted on the box.
Has anyone else heard of this? I don't think he was trying to sell me a more expensive filter, as the one I ended up with cost even less than the competitor's brand I had at first. He just noticed I had synthetic blend
oil in the basket and sent me back for a different oil filter (and, of course, the issue of dirty side vs clean side bypass wasn't even a consideration, it was for my daughter's box-stock Honda Civic and she's quite obsessive about changing her oil very frequently).
What do you gearheads know about this?
Cheers from Doug!!