OK, I just completed a VERY informal test with my Frantz bypass filter, and involving a Fleetgaurd 3894 Microglas full flow filter in the first test, and an Amsoil/Donaldson Nanofiber full flow in the second.
Both test runs used Delo 400 15/50 for approximately 5000 miles - here's the particle count results:
Earlier test on left, latest one (Amsoil/Donaldson filter) on right
And here was the "Standard" report on wear metals on the last run - very close to the first, so won't post it:
Both test runs used Delo 400 15/50 for approximately 5000 miles - here's the particle count results:
Earlier test on left, latest one (Amsoil/Donaldson filter) on right
And here was the "Standard" report on wear metals on the last run - very close to the first, so won't post it: