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I have heard some bad stuff about the K&N air filters. What do you guys think about their oil filters??
K&N oil filter?
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anyone??
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304 Posts
i have one and i like it. has not given me any trouble. have had it for 4000 miles.
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5,467 Posts
[ QUOTE ]
I have heard some bad stuff about the K&N air filters. What do you guys think about their oil filters??
[/ QUOTE ]
It definately isn't restrictive. They did some oil filter flow tests over ay BITOG and it was one of the highest flowing filters out there. BUT.....it also was one of the worst in particle size that it would let through. I know on LT1 Z28's and corvettes the Use Oil Anaylis results looked excellent with the K&N because the oil flow through the filter was more important than filtration. The thing is, the LT1's have a small filter so media that is more restrictive hurts oil flow. Now look at our filter on the PSD. It is much bigger than the filter I mentioned and a better filtering media isn't gonna hurt because of all the surface area the oil has to flow through.
With all that being said, I recommend the Fleetguard LF3974
for our engines. It filters great and flows great and with it's layered Stratapore media, it takes a long time to plug up.
Hammer
I have heard some bad stuff about the K&N air filters. What do you guys think about their oil filters??
[/ QUOTE ]
It definately isn't restrictive. They did some oil filter flow tests over ay BITOG and it was one of the highest flowing filters out there. BUT.....it also was one of the worst in particle size that it would let through. I know on LT1 Z28's and corvettes the Use Oil Anaylis results looked excellent with the K&N because the oil flow through the filter was more important than filtration. The thing is, the LT1's have a small filter so media that is more restrictive hurts oil flow. Now look at our filter on the PSD. It is much bigger than the filter I mentioned and a better filtering media isn't gonna hurt because of all the surface area the oil has to flow through.
With all that being said, I recommend the Fleetguard LF3974
for our engines. It filters great and flows great and with it's layered Stratapore media, it takes a long time to plug up.
Hammer
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45 Posts
Ive ran one ever since they have been out and I think that at the time of an oil change the oil actually looked cleaner than when I ran a motorcraft filter. JMO
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37 Posts
I've been using the K&N oil filter for years and love it. I found a different filter test that rated K&N as the best filter (compared to NAPA, Fram and a couple of others) I don't remember who did the study but it was an unbiased third party. Maybe I'll be able to search for a link and get it posted. The only problem I have had with K&N is sometimes if the filter is on too tight the nut on the bottom tears off. In which case you have to remove the filter just like any other.
OIL or AIR? Your topic says OIL, your post says AIR. Two different beasts.
Oil filters are great. I highly recommend them. Buy in bulk from Diesel Injection Service and they only cost a few dollars more than a Motorcraft FL1995 but are extremely good filters.
As far as their air filter OEM "box" style...I highly DO NOT recommend them as they are known to leak around the edges where it is supposed to seal around your air box. You do NOT want to dust your engine. The K&N conical air filters are similar to the aFe Magnum Force intakes, and are probably as good as any other conical air filter as long as you keep the element properly lubricated (not too much or too little).
Oil filters are great. I highly recommend them. Buy in bulk from Diesel Injection Service and they only cost a few dollars more than a Motorcraft FL1995 but are extremely good filters.
As far as their air filter OEM "box" style...I highly DO NOT recommend them as they are known to leak around the edges where it is supposed to seal around your air box. You do NOT want to dust your engine. The K&N conical air filters are similar to the aFe Magnum Force intakes, and are probably as good as any other conical air filter as long as you keep the element properly lubricated (not too much or too little).
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206 Posts
Hammer,
Since you're one of the few I know that has run the venturi combo filter (lf9027) from fleetguard, why do you like the full stratapore lf3974 better (the full-flow section of the VC is the same stratapore media)? IIRC, you also run a conventional bypass (oilguard?). If you did not have a conventional bypass filter setup, would you prefer the 3974 over the 9027, and why/not?
Just curious. I don't have a conventional bypass setup, and am considering using the lf9027, but other info could change my mind.
Thanks in advance...
Andy
Since you're one of the few I know that has run the venturi combo filter (lf9027) from fleetguard, why do you like the full stratapore lf3974 better (the full-flow section of the VC is the same stratapore media)? IIRC, you also run a conventional bypass (oilguard?). If you did not have a conventional bypass filter setup, would you prefer the 3974 over the 9027, and why/not?
Just curious. I don't have a conventional bypass setup, and am considering using the lf9027, but other info could change my mind.
Thanks in advance...
Andy
Joined
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5,467 Posts
[ QUOTE ]
Hammer,
Since you're one of the few I know that has run the venturi combo filter (lf9027) from fleetguard, why do you like the full stratapore lf3974 better (the full-flow section of the VC is the same stratapore media)? IIRC, you also run a conventional bypass (oilguard?). If you did not have a conventional bypass filter setup, would you prefer the 3974 over the 9027, and why/not?
Just curious. I don't have a conventional bypass setup, and am considering using the lf9027, but other info could change my mind.
Thanks in advance...
Andy
[/ QUOTE ]
I still have the 9027 on my truck. I originally changed my oil and installed the 9027 and about 300 miles later recieved the Oilguard unit and installed it. BTW, I actually had the 9027 sitting on my shelf before I decided to go with Oilguard. Anyway, the 9027 is still there because I havn't gotten to oil change time yet. The reason I recommend the LF3974 is because the LF9027 is probably too expensive for most to consider so I tell them the next best thing. On the next oil change, I'm gonna use a LF3974 Since I already have a better bypass filter then the stacked disc type inside the LF9027. The reason is that I want to have a full flow filter that has the most full flow surface area. If I didn't have my Oilguard, I would keep using LF9027 since powerstrokeshop.com has a good price on them on their new filter website. Their price of around $13 isn't too bad for the LF3974 either. Cheaper than the $16 I paid for the LF3974 at the local IH dealer Friday.
I tell you what I don't understand, it's why people must have the Motorcraft filter? I mean, it's not a bad filter, but there isn't anything special about it. The Stratapore media filter from Fleetguard is, without a doubt, the most superior filtration on the market yet still maintaing extremely high volumetric flowrates across the media. The only way other filter manufactuers can maintain similar flowrates as a fleetguard Stratapore filter is to increase the micron size of particles that can get through. Oh well, reminds me of that horse and water saying.........
ON EDIT: that new website by powrstrokeshop is saveonfilters.com
Hammer
Hammer,
Since you're one of the few I know that has run the venturi combo filter (lf9027) from fleetguard, why do you like the full stratapore lf3974 better (the full-flow section of the VC is the same stratapore media)? IIRC, you also run a conventional bypass (oilguard?). If you did not have a conventional bypass filter setup, would you prefer the 3974 over the 9027, and why/not?
Just curious. I don't have a conventional bypass setup, and am considering using the lf9027, but other info could change my mind.
Thanks in advance...
Andy
[/ QUOTE ]
I still have the 9027 on my truck. I originally changed my oil and installed the 9027 and about 300 miles later recieved the Oilguard unit and installed it. BTW, I actually had the 9027 sitting on my shelf before I decided to go with Oilguard. Anyway, the 9027 is still there because I havn't gotten to oil change time yet. The reason I recommend the LF3974 is because the LF9027 is probably too expensive for most to consider so I tell them the next best thing. On the next oil change, I'm gonna use a LF3974 Since I already have a better bypass filter then the stacked disc type inside the LF9027. The reason is that I want to have a full flow filter that has the most full flow surface area. If I didn't have my Oilguard, I would keep using LF9027 since powerstrokeshop.com has a good price on them on their new filter website. Their price of around $13 isn't too bad for the LF3974 either. Cheaper than the $16 I paid for the LF3974 at the local IH dealer Friday.
I tell you what I don't understand, it's why people must have the Motorcraft filter? I mean, it's not a bad filter, but there isn't anything special about it. The Stratapore media filter from Fleetguard is, without a doubt, the most superior filtration on the market yet still maintaing extremely high volumetric flowrates across the media. The only way other filter manufactuers can maintain similar flowrates as a fleetguard Stratapore filter is to increase the micron size of particles that can get through. Oh well, reminds me of that horse and water saying.........
ON EDIT: that new website by powrstrokeshop is saveonfilters.com
Hammer
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206 Posts
Thanks Hammer!
One of the pieces of literature that FG has on the venturi combo filters mentions that the "bypass" section keeps the "full-flow" section cleaner (less clogged) longer. Of course this is not an issue with your oilguard filter installation. On the other hand, there is also less stratapore media in a venturi combo (due to some room being taken up by the stacked disc bypass section).
BTW, the LF9027 is $16.76 at saveonfilters.com. The question is whether it is worth the extra ~$3 over the stratapore, for a truck w/o traditional bypass. I doubt it is worth it for a truck with a traditional bypass filter.
Thanks again for your insights,
Andy
One of the pieces of literature that FG has on the venturi combo filters mentions that the "bypass" section keeps the "full-flow" section cleaner (less clogged) longer. Of course this is not an issue with your oilguard filter installation. On the other hand, there is also less stratapore media in a venturi combo (due to some room being taken up by the stacked disc bypass section).
BTW, the LF9027 is $16.76 at saveonfilters.com. The question is whether it is worth the extra ~$3 over the stratapore, for a truck w/o traditional bypass. I doubt it is worth it for a truck with a traditional bypass filter.
Thanks again for your insights,
Andy
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