Originally Posted By: sprintman
Again rubbish. Engines get dirty quickly with even Full Synthetic and 'normal' oci. My BMW has had Mobil 1 0W40/OEM filter changes every 8,000 kms instead of the Service Condition oci's of about 25,000 kms oci's. RX early on second clean phase has been transformed, heck even the VANOS rattle has gone (seal rejuvenation). Two seperate indy shop owners commented how quiet and smooth it is compared to others of it's age and mileage, I'll let them know when I have finished testing.
And?? Define dirty..
Again rubbish. Engines get dirty quickly with even Full Synthetic and 'normal' oci. My BMW has had Mobil 1 0W40/OEM filter changes every 8,000 kms instead of the Service Condition oci's of about 25,000 kms oci's. RX early on second clean phase has been transformed, heck even the VANOS rattle has gone (seal rejuvenation). Two seperate indy shop owners commented how quiet and smooth it is compared to others of it's age and mileage, I'll let them know when I have finished testing.
And?? Define dirty..