Originally Posted By: fdcg27
What OCI do you plan on?
If you're doing the 5-6K runs typical of most of us, then you don't need either a D+ or an M1 oil filter.
These have the constuction quality and holding capacity for extended drains.
They aren't any more efficient than many cheaper oil filters.
Of course, if you run either for two drains, you'd then be getting your money's worth out of them.
You probably aren't gaining anything using M1 oil either.
If you intend to run 8-10K drains, then your oil and filter choice makes sense.
Now, if you got both at a real steal, then I'd be entirely in agreement with your choice.
JMHO
The evidence out there is that the Mobil1 filters, Fram ToughGard and Ultra, and NAPA Gold ARE better than plain-paper oil filters, more efficient. The ISO 4548-12 results show those filters get far more junk particles out that can interfere with oil film performance, the stuff below 20 microns. Oil films run from zero to 50 microns thick.