K & N Oil Filter - Two Uses?
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Race Director
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From: Phoenix area, AZ
K & N Oil Filter - Two Uses?
I'm pretty sure I already know the answer to this question, but I've learned not to let my 60's-70's muscle car know-how interfere with the fact that I know very little about modern automotive engineering technology.
With that said, the last time I had my oil changed I bought a K&N oil filter because it was on sale. The parts clerk told me at the time that they were good for two oil changes before they had to be tossed. Is this true at all? I'm guessing it's not.
I didn't think much about this but I'm near time for a change and wanted to be sure before I went shopping for oil/filter.
With that said, the last time I had my oil changed I bought a K&N oil filter because it was on sale. The parts clerk told me at the time that they were good for two oil changes before they had to be tossed. Is this true at all? I'm guessing it's not.
I didn't think much about this but I'm near time for a change and wanted to be sure before I went shopping for oil/filter.
Drifting
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From: Calgary, Alberta
Tech Contributor
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
I have a bridge here in South East CT I would like to sell you!
Its on sale this week only!
Cost has been drastically reduced!!
Youre parts guy is full of BS! The oil gets dirty and the filter filters it out. As the filter gets full of dirt, the volume of oil it can pass gets reduced. Sure, it can collect MORE DIRT,, but, youre engine will not see the VOLUME of oil that it need under heavy loads or high RPM. Plus, when you drian all the old out of the pan, you still have 1/3 of a quart of old nasty oil left in the old filter.
IMHO,, Stick with a WIX or AC Delco PF oil filter. They are great filters, are well made, filter properly and dont cost an arm and a leg.
Please change the filter every time you change the oil.
Bill
Its on sale this week only!
Cost has been drastically reduced!!Youre parts guy is full of BS! The oil gets dirty and the filter filters it out. As the filter gets full of dirt, the volume of oil it can pass gets reduced. Sure, it can collect MORE DIRT,, but, youre engine will not see the VOLUME of oil that it need under heavy loads or high RPM. Plus, when you drian all the old out of the pan, you still have 1/3 of a quart of old nasty oil left in the old filter.
IMHO,, Stick with a WIX or AC Delco PF oil filter. They are great filters, are well made, filter properly and dont cost an arm and a leg.
Please change the filter every time you change the oil.
Bill
Le Mans Master
Joined: Mar 2002
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From: PNW
The answer to the OP's question really depends on how many miles have been put on the oil filter. If it only has a few thousand miles on it, then it could certainly be used for a second oil change IF he so desired. Many car manufacturers recommend changing the oil filter every other oil change for normal use driving conditions.
Last edited by ZeeOSix; Oct 17, 2013 at 07:00 PM.
Le Mans Master
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From: PNW
BUT, if the filter gets too loaded up, the filter bypass valve could open up and let dirt past the filter media.
So like I said above, the answer to this question really depends on how many miles are on the filter ... and how clean your engine is inside (I'm sure most are pretty clean if full synthetic has been used and regular oil changes occur).
Melting Slicks
Joined: Apr 2009
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Some filters are designed with a higher dirt holding capacity such as the K&N but this does not mean that you keep it in for two oil changes.
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Le Mans Master
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From: PNW
^^^ But you could, depending on the mileage on the filter. So if you used a full synthetic Fram Ultra oil filter that is rated for 15K miles, would you change it after 2K miles? I know most people would, but technically it would still be good more many more miles.
Melting Slicks
Joined: Mar 2009
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From: Odessa FL
St. Jude Donor '10-'12-'13-'14-'15-'16-'17
It's been shown that a used filter filters more efficiently than a new filter.
The answer to the OP's question really depends on how many miles have been put on the oil filter. If it only has a few thousand miles on it, then it could certainly be used for a second oil change IF he so desired. Many car manufacturers recommend changing the oil filter every other oil change for normal use driving conditions.
The answer to the OP's question really depends on how many miles have been put on the oil filter. If it only has a few thousand miles on it, then it could certainly be used for a second oil change IF he so desired. Many car manufacturers recommend changing the oil filter every other oil change for normal use driving conditions.
Advanced
Joined: Dec 2010
Posts: 61
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From: Kingsburg Ca
I'm already under there; a $4.00 PF46 aint gonna break the bank for the piece of mind that a new one is installed.Back in the day JC Whitney sold a filter that used toilet paper as the filter media....If it really worked we would all be using Charmin filters today.Oil and filter at the same time for me
Race Director
Joined: Jan 2008
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From: oregon
I have a bridge here in South East CT I would like to sell you!
Its on sale this week only! Cost has been drastically reduced!!
Youre parts guy is full of BS! The oil gets dirty and the filter filters it out. As the filter gets full of dirt, the volume of oil it can pass gets reduced. Sure, it can collect MORE DIRT,, but, youre engine will not see the VOLUME of oil that it need under heavy loads or high RPM. Plus, when you drian all the old out of the pan, you still have 1/3 of a quart of old nasty oil left in the old filter.
IMHO,, Stick with a WIX or AC Delco PF oil filter. They are great filters, are well made, filter properly and dont cost an arm and a leg.
Please change the filter every time you change the oil.
Bill
Its on sale this week only!
Cost has been drastically reduced!!Youre parts guy is full of BS! The oil gets dirty and the filter filters it out. As the filter gets full of dirt, the volume of oil it can pass gets reduced. Sure, it can collect MORE DIRT,, but, youre engine will not see the VOLUME of oil that it need under heavy loads or high RPM. Plus, when you drian all the old out of the pan, you still have 1/3 of a quart of old nasty oil left in the old filter.
IMHO,, Stick with a WIX or AC Delco PF oil filter. They are great filters, are well made, filter properly and dont cost an arm and a leg.
Please change the filter every time you change the oil.
Bill
Team Owner
Joined: May 2001
Posts: 87,404
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From: Western NY
IMHO, the filter MAY indeed still have some "life" left in it, but why dilute the fresh oil with the old oil that's left in the filter?
Melting Slicks
Joined: Mar 2009
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From: Odessa FL
St. Jude Donor '10-'12-'13-'14-'15-'16-'17
Thread Starter
Race Director
Joined: May 2012
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From: Phoenix area, AZ
I'm already under there; a $4.00 PF46 aint gonna break the bank for the piece of mind that a new one is installed.Back in the day JC Whitney sold a filter that used toilet paper as the filter media....If it really worked we would all be using Charmin filters today.Oil and filter at the same time for me
Back in the day a roll of toilet paper was commonly used as a filter, with or without JC Whitney.
Le Mans Master
Joined: Mar 2002
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From: PNW
You know the filter bypass valve is located in the engine block, and not the oil filter on LS engines (?).
The only time a brand new oil filter could be in bypass is if you fired up the engine when the oil was very cold and thick and you revved the crap out of the engine.
Le Mans Master
Joined: Mar 2002
Posts: 5,955
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From: PNW
Cannot argue the statements made on either side of this debate, as I am no expert. However, curiosity would ask the question of how long does a used filter hold an advantage over a new filter in efficiency of filtration. In other words when does a new filter become used, and the advantage of the used filter is no longer in effect?
With today's' superior synthetic oils that keep engines very clean inside, engines today don't produce as much crud for the filter to catch.
Le Mans Master
Joined: Mar 2002
Posts: 5,955
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From: PNW
