Originally Posted By: sayjac
Originally Posted By: RF Overlord
Originally Posted By: JOD
It's 99%@ 20u versus 80%@ 20u.
The AMSOIL filter study showed the Motorcraft FL820S is actually 93.7%
True that, but up until 2011 when the Amsoil test was done, the only published Motorcraft spec was the 80%@20um posted by the OP, which in this thread resurrection was 2010. Iirc, the OP posted he is now running the less expensive FL820S because of the Amsoil test.
+1 ... there was a lot of talk back at that time about how Motorcraft/Ford rated their oil filters. A few members here even tried to contact Ford and get more specific information, but Ford just had this "80% @ 20 microns" that nobody could move off of ... until Amsoil published their ISO testing info. Amsoil actually did Ford a favor by publishing that info.
Originally Posted By: RF Overlord
Originally Posted By: JOD
It's 99%@ 20u versus 80%@ 20u.
The AMSOIL filter study showed the Motorcraft FL820S is actually 93.7%
True that, but up until 2011 when the Amsoil test was done, the only published Motorcraft spec was the 80%@20um posted by the OP, which in this thread resurrection was 2010. Iirc, the OP posted he is now running the less expensive FL820S because of the Amsoil test.
+1 ... there was a lot of talk back at that time about how Motorcraft/Ford rated their oil filters. A few members here even tried to contact Ford and get more specific information, but Ford just had this "80% @ 20 microns" that nobody could move off of ... until Amsoil published their ISO testing info. Amsoil actually did Ford a favor by publishing that info.
