K&N Air Filter

[dtgunner7]

Has anyone used the K&N air filter on there Diesel pusher, have read positive and negative on these air filters. Supply houses want almost the same price for stock replacement as K&N wants for a clean able filter...

[427435]

dtgunner7 wrote:
About two changes and YES they and ALL PAPER will come apart with time and be sucked into turbo.. Have any old newspapers not good example but, they aren't exposed to thousands of gallon of outside air.

Although called "paper" filters, they are made from totally different materials (synthetic) than newspaper (wood fiber).

[jwmII]

427435 wrote:

jwmII wrote:

Passin Thru wrote:
If they are so freekin bad, why does the Border Patrol use them in their vehicles? I've had them for over a million miles and if you clean and oil them properly, they are fine.

The border patrol purchases their auto parts on contracts based on price. Who ever has the best price gets the sale. If tea strainers were cheaper that is what they would buy. I was involved in testing of air filters for off road equipment and regarding the K & N product nothing got better but they do plug up faster.

And they get new trucks frequently.

After a 150,000/200,000 miles a new truck is probably warranted. and that in many cases in a year or two of service.

[dtgunner7]

About two changes and YES they and ALL PAPER will come apart with time and be sucked into turbo.. Have any old newspapers not good example but, they aren't exposed to thousands of gallon of outside air.

[bluwtr49]

dtgunner7 wrote:
JetAonly, I change my filter at the most once every two years, no matter how many miles as paper filters come apart...

Come apart??? Never heard of a Donaldston Filter failing and the change interval is strictly dependent on the dirt loading....might be one year might be 10 years which is why filter minders are used.

In fact, look at the filter minder before and after a long pull at full throttle. If it hasn't moved appreciably than there is no restriction of any significance in the air filter and changing to a different type buys nada.

[JetAonly]

I read that very 3 years is recommended due to failures, as you mention. Of course, too often is almost as bad as not often enough…..

I don't know how much you spend on a filter, but I really doubt you will get better filtration than OEM so it's a matter of how long before you start saving money. If, the KN has the same or better initial filtration.

[dtgunner7]

JetAonly, I change my filter at the most once every two years, no matter how many miles as paper filters come apart...

[JetAonly]

The Dry type you mention is different. They are about $300 from KN for my size. At the price I get my regular ones $180, I have to wait 6 years to start seeing a payback. I don't know the initial filter efficiency of the KN, either. If I was driving 100k/year miles I'd have to do a cost analysis. Also, if I had a naturally aspirated diesel it might be interesting.

I don't see the value.

[427435]

dtgunner7 wrote:
Do you people read what I said, DRY filter, some what new. NOT AN OIL BATH.

So is it reusable???

[dtgunner7]

Do you people read what I said, DRY filter, some what new. NOT AN OIL BATH.

[427435]

jwmII wrote:

Passin Thru wrote:
If they are so freekin bad, why does the Border Patrol use them in their vehicles? I've had them for over a million miles and if you clean and oil them properly, they are fine.

The border patrol purchases their auto parts on contracts based on price. Who ever has the best price gets the sale. If tea strainers were cheaper that is what they would buy. I was involved in testing of air filters for off road equipment and regarding the K & N product nothing got better but they do plug up faster.

And they get new trucks frequently.

[427435]

Passin Thru wrote:
If they are so freekin bad, why does the Border Patrol use them in their vehicles? I've had them for over a million miles and if you clean and oil them properly, they are fine.

Two very big "ifs." You ever see a farm tractor or piece of construction equipment with an oil wetted filter (oil bath air cleaners on antique stuff doesn't count)?

[jwmII]

Passin Thru wrote:
If they are so freekin bad, why does the Border Patrol use them in their vehicles? I've had them for over a million miles and if you clean and oil them properly, they are fine.

The border patrol purchases their auto parts on contracts based on price. Who ever has the best price gets the sale. If tea strainers were cheaper that is what they would buy. I was involved in testing of air filters for off road equipment and regarding the K & N product nothing got better but they do plug up faster.

[Passin_Thru]

If they are so freekin bad, why does the Border Patrol use them in their vehicles? I've had them for over a million miles and if you clean and oil them properly, they are fine.

[jwmII]

Overpriced snake oil. Gotta hand it to K & N tho, they have kept that myth going for years and made several fortunes off of the gullible.