"OIL and filtration by far are the cheepest maint for any motor driven vehicle" this is quote from Tippers "MOTOQUOTO" One might wonder where the name Tipper comes from, well in th early days had a Mustang seat 17 Inches, wide when at very slow turn especially right I would tip over hence the name Tipper just food for thought course I usually had consumed 2 or 3 maybe 4 or 5 silver bullets.
I bought a Pure Power oil filter a couple months ago and used it on my Street Bob. I sold the Street Bob & purchased a new FLHT. I kept the Pure Power oil filter & put it on my FLHT. I did 540 miles on the FLHT & changed the oil.
The oil filter caught a lot of particles and was easy to clean. It is without doubt a quality product & I am inclined to believe that more Riders would buy them if they had the opportunity to see one up close because it is a well engineered product. Whether it keeps the engine cooler or increases HP is anyones quess.
I use a re-usable filter very similar to the PurePower one. Mine is from K & P Engrg. Whether or not it increases power is immaterial to me. What it does do is allows me to easily see what has been filter from the oil. Since I cut open the paper filters I used previously, I have a comparison in debris. The K & P filter removes a larger amount to very small material than I found with the paper filters. The major difference is that most of the oil which enters a paper filter does not go through the paper element but through the low-restriction by-pass valve. On the other hnad, the reusable filters have a much higher bypass valve pressure, and oil passes through the fine mesh screen.
I'm pleased with my K & P filter, a well made unit.
First, you CANNOT see the material that does the real damage with your bare eye or a magnifying glass.
I looked at the reuseable web sites, generalities and at least one lie.
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From a study by AC and I forget who else...
Abrasive Engine wear can be substantially reduced with an increase in single pass efficiency. Compared to a 40-Micron filter, Gasoline Engine wear was reduced by 50 percent with 30-Micron filtration. Likewise, wear was reduced by 70 percent with 15-Micron filtration. Controlling the abrasive contaminants in the range of 2 to 22 Microns in the lube oil is necessary for controlling Engine wear.
"The Micron rating of a filter as established in a single pass efficiency type test, does an excellent job indicating the filter's ability to remove abrasive particles in the Engine lube oil system."
The smallest particles most popular "full Flow" filters capture with high efficiency are sized 25 to 40 Microns, depending on the filter brand.
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You can't filter too much.
Also, what makes anyone think the bypass is basically always open?
What I can 'see' is that the re-usable filter I have collects more 'stuff' that the paper filters I used to cut apart. How much more stuff, I'd say about 25% more. And yes, I can't see the fine stuff, but there is more material trapped in my filter now than with previous filters.
Also, note the filter process is different between the flow-thru filters (the re-usable ones) and the flow-by filters (the paper cartridge ones), for what that's worth.
Last edited by fxst-rider; 06-13-2007 at 09:31 PM.
Reason: clarification
I believe this is all great info. To add to it I have found that most of the 1 micron units bypass at about 20-25 psi. So at cruzin speed you are going to get the 100% every pass filtration. Open the throttle and watch what happens to your oil pressure. Once you hit the bypass you are pumping everything past the element.
On the magnetism subject. I think magnets are a great idea for catching crud. The magnetic force transferred to the fuzz is not enough to make it stick to the ferrous parts that are oil covered in the motor, they will just get washed away. And nowadays, most of the non-rotating items (cases, pistons, jugs, heads, etc.) are all aluminum. Just my .02.
Industrial machines frequently run with a kidney loop filter. Think about a 500 GPM oil system, but with a 10 GPM filter tapped off to the side with its own pump.
That can clean up a system just fine.
Also, I don't see the bypass lifting as necessarily meaning 100% filter bypass.
Still trying to research, but reputable sources are few and far between.
BluesFan is on target yet again, debris in the 2 to 20 micron range does all the damage and its debris too small to see with the naked eye.
Yes, most filters absolute efficiency rating is 25 to 40 microns. Nominal rating is what a filter will remove only 50 percent of the time, so a nominal rating isn't the best rating to go by, but OK. Harley's full flow filter has a nominal rating of 5 microns, they don't list an absolute efficiency rating (at rating that shows debris removed 98.7 percent of the time).
By the way BluesFan, Amsoil full flow filter has an absolute efficiency rating of 15 microns, nominal of 2 to 3.
Pretty nice when they cost a dollar less than the HD filter and is good for twice the OEM oil change interval. Best protection for minimal cost.
Keep'em comin bluesfan, you write good stuff.
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