Given that the filter goes in sideways, it can't really be prefilled completely. If it could be, I would prefill. I used to prefill the filter on my America and any vehicle with a vertically mounted filter, but with the Rocket 111, I just spin it on and idle the bike till she's good. (so long as it's only a few seconds)
"A certified lubrication specialist.." And all this time I thought I was too- applies to a different kind of engine, I guess.
I have no life. I watched the entire video, knowing what the outcome would be. But, there you go. I fill the filter most of the way and try to screw it on before a minor amount has a chance to run out into the pan. No big deal. I heard you should do it years ago and I've just done it ever since, not fully sure if it was based on science or some mystical mechanic voodoo.
I've always dumped oil into the filter and used it to lube the ring. By the time I put the filter on, the oil has been absorbed by the filter and doesn't spill anywhere.
I've never had an oil related failure in any vehicle I've owned and don't know anyone who has.
Whatever gives you peace of mind I'm all for it but sometimes I think we, overthink.
I've always dumped oil into the filter and used it to lube the ring. By the time I put the filter on, the oil has been absorbed by the filter and doesn't spill anywhere.