My question is.
Although you found differences between what was deemed the best oil filter
for other applications, are the differences significant?
Earlier you stated numbers relating to filtration. All the filters had a
different number. In taking the top two as an example, if there was a
difference of 5 in the numbers, all other things being equal, how many
additional miles would one realize before needing the tear down and rebuild
due to wear and tear? 100 miles? 500 miles? 1000 or more? Although hard data
is nice, if it cannot be related to real world scenarios, it looses its
impact. Some of the other factors, and I am not picking on you, also seem
subjective. The thickness of the case, the quality of the pressure relief
valve, length of filter material on the surface are legitimate concerns but
again in the real world are they significant? If the case has reasonable
resistance to puncture, then it is indeed adequate. Things like this to me
are either pass or fail. It works as designed or it doesn't. The pressure
relief valve should not be a factor on a well maintained motorcycle. One
thing I have never seen either is exactly how much debris will an oil filter
hold? Capacity is always a topic, but in reality, how far would one have to
go to "fill" an oil filter media? My point being if the distance it would
take is twice what you would ever go without changing the filter, who cares
if you have that additional storage? Mileage times two plus 20% is no longer
significant either. About the only exception that comes to mind here is the
LDR of the group. I believe they will be the first to tell you that even they
do not consider their riding styles and tastes within the norm of the
motorcycling public. All in all it sounds like as far as we can tell the
stock oil filter looks to be as good as any out there and better than most.
Other than that....... it is like picking the fly poo out of the pepper.
RSRBOB
