oil filter
Outstanding HDF Member
Joined: Oct 2009
Posts: 2,488
Likes: 30
From: Maryland near DC
Finer filtration so no risk of damage, if anything improved life.
As will all things in life, there is no such thing as a free lunch, so the price you pay is reduced life as it will clog quicker as it extracts more.
Thing is, you invariably change the filter before it is clogged, and you have no way of telling it is clogged anyway so basically you shouldn't notice this
As will all things in life, there is no such thing as a free lunch, so the price you pay is reduced life as it will clog quicker as it extracts more.
Thing is, you invariably change the filter before it is clogged, and you have no way of telling it is clogged anyway so basically you shouldn't notice this
Road Warrior
Joined: Nov 2008
Posts: 1,296
Likes: 3
From: Cheltenham, UK
[quote=mrfikser;9470649]this is not necessarily true...if the filter media surface area is the same, than what you say is true, but if the surface area of the media is higher the life expectancy can be the samequote]
Agreed, quite right
Actually that is not correct (in theory at least and certainly within the scope of this in practice as well). The pump is a positive displacement pump which means it will deliver the same flow irrespective of resistance. What could happen is that you divert some flow across the relief valve but I doubt it as that is set for a highly contaminated filter (at which point we can assume a 5um and 10um filter are the same thing).
I practice what will happen is you will see an increase in pressure between the pumo and filter which means you are drawing more power for the pump which, in turn, means reduced brake horse. Of course these numbers are that small that it is extremely unlikely anyone would notice a damn thing.
Personally, if I was offered 5um or 10um I would take 5um rather (assuming they are both absolute ratings of course but that is a whole new debate)
Agreed, quite right
I practice what will happen is you will see an increase in pressure between the pumo and filter which means you are drawing more power for the pump which, in turn, means reduced brake horse. Of course these numbers are that small that it is extremely unlikely anyone would notice a damn thing.
Personally, if I was offered 5um or 10um I would take 5um rather (assuming they are both absolute ratings of course but that is a whole new debate)
Tourer
Joined: Jan 2009
Posts: 488
Likes: 7
Guys, Harley makes two filters, a 5 micron and a 10 micron. The 5 micron is designed for EVO motors and the 10 is for Twin Cams, that is the only difference between the two H-D Filters. The Twin Cam has tighter tolerances, hence the stricter filter.
Stellar HDF Member
Joined: Jan 2008
Posts: 3,036
Likes: 65
From: Earth
Sorry, but you got that backwards. 5 is for the TC and 10 for the EVO
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