In another article, a guy on the diesel site ran an independent test on air
filters and their performance. Showed K&N had higher flow but also passed
smaller particles. This is a link to that site:
Does anyone know of a similar site for oil filters. Sure would like to find
an independent, 3rd party evaluation.
There are two classes of pedestrians in these days of reckless motor
traffic - the quick and the dead.
~ Lord Dewar 1933 ~
Climbing into a hot car is like buckling on a pistol. It is the great
equalizer. ~ Henry G. Felsen 1964 ~
I read through the oil filter "testing" on the Bobistheoilguy site and
frankly I am not impressed with their methods or consistancy. All they are
showing is pressure drop through each filter they put on their homemade
machine, and I noticed that the inlet pressure on about half the photos
isn't exactly at 40psi (if you can believe the gauge), but ranges from
38-42psi. In addition, there is no reading for oil temperature, no way to
determine if the filter has gone into bypass mode, no way to determine the
actual flow through each filter, and no way to determine the filtering
ability of each filter. One filter could be flowing 8 gallons per minute
through it with a pressure drop of 2psi, while another could be flowing 6.5
gallons per minute with a pressure drop of 2psi and they would never know
because they are using a variable speed motor and no flowmeter. And they're
using a multiweight motor oil (10w-30).
All I'm seeing here is two guys killing some spare time in their garage, but
not presenting any really useful information on which to make a decision.
At least on the first oil filter study site the guy cut open each filter and
made definative measurements and observations without the inconsistancies of
the flow tests mentions above. At least on this site I could compare actual
construction and other details of each filter and come to the conclusion
that I will never, ever buy a Fram filter...
Cheers - Jonathan
I agree. Both sites are giving some basic info, but neither is showing
The key is how much and what size particles get thru. The benefit to the air
filter study is it showed both filtration and air flow.
Surely there is one out there somewhere
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