I've had one of these on my '09 FXD for almost 5 years and when I retired that bike, I took it off and put it on my newly bought '98 FXD. Even on an older model bike like this, I don't worry over oil problems one bit.
It's also so nice to have when doing oil changes, as this is easy to clean and to see if crud is getting into your oil by looking at the magnet in it.
I figure it's more than paid for itself in the time I've owned it since I change my oil religiously every 2500 miles. Figure $9 per standard H-D black filter, my '09 has 88,000 miles on it, 88,000/2500=35, 35 times I've changed the oil on that bike. $9 x 35 = 315. I'd have spent $315 in that time if I'd used regular black H-D oil filters. I've just that much saved twice what the cost of this great filter is and with it now on this new '98 that has only 29000 miles on it, I'll be saving another $315 + $137 = $452 ($137 being the cost of this filter on this site) if this bike makes it to 88,000 miles also. When one is poor as dirt like me, getting by in a disability check, that $452 is a hell of a lot of savings.