I never put oil on the case mating surface, I actually wipe that area completely clean, prefill the filter, smear a little of that fresh oil on the oring and spin it on.
Quote from: Lloyd on June 19, 2011, 01:19:02 AMI never put oil on the case mating surface, I actually wipe that area completely clean, prefill the filter, smear a little of that fresh oil on the oring and spin it on.I do the same, figuring it is good to clean away all the grub on the case so it doesn't get onto the o-ring or drop into the filter.
It looks like I have been waisting a finger tip of fresh oil for many many years.
On a positive note, Ray shows up for todays ride with the cleanest rear.