On 8/29/2015 8:17 AM, Oren wrote:
On Fri, 28 Aug 2015 20:42:01 -0700, Don Y
wrote:

If you fill the filter with oil before screwing it on, you won't have to add,
later. I've found that you can get a *lot* of oil into a DRY filter -- even
if the filter is mounted "opening down" (e.g., like on Subaru's). The
filter pleats capture and hold the oil (even if you can't *completely* fill
the filter due to risk of it running out while you are screwing it on.
"Wetting" the O-ring on the filter with a bit of fresh oil also helps
improve the seal to the block.

Been doing this since I was a teen. Filling the filter gets oil to
the crank bearings much faster. Good idea on older high mileage

Yes. But, often the filter is oriented in a way that makes
*completely* filling the filter impractical. E.g., Subaru's
have the filter located on *top* of the engine with the
opening facing straight *down*.

But, if you slowly, tentatively fill the filter, you will notice
that it will ABSORB a LOT of oil before it even starts to
"pool" in the bottom of the filter. Installing a *dry* filter
means the vehicle has to do all of that work *before* the oil
can make its way through the filter!

engines. Rubbing oil on the filter O-ring also prevents the
possibility of the rubber binding and perhaps not sealing.

It also *seems* to result in less "stuck filters" when it comes
time to removing them!

The downside is you now have oil on your finger and will *tend*
to forget about that... while later screwing the filter onto the
block (leaving a nice film of oil on the outside of the filter
that makes tightening it more frustrating -- as your hand now
wants to slip on the oil film!)