Currnetly I am running Wix air and furl filters. I am considering changing to K&N but want to know if they are really that good and if you can wash them and reuse them since they are so costly. I have been reading that you can wash asn reuse the airfilters and get uo to 50000 miles out of one filter, I am kinda scepticle of that but would love some feed back.

 

Personally, I don't trust the K&N air filters. There have been reports from guys running them that do oil analysis that say the numbers jump when running them compared to a good stock filter.

I just buy the kit from Genos, save some $$ and still get good filtration.

 

How offen are you changing your fuel and air filters????

 

Wix is a quality product known to do the job correctly. Why change to an unknown process? Filters isn't a place to try and save money, it's an insurance policy. Wix filters are cheap compared to the price of an engine rebuild.

 

Was not trying to cut or save filter money. Was simply inquiring about K&N filters. I spend tons on filters I change Air, Fuel, and Oil filters every 6000 miles. You can eat off my engines. I took my 07 into the dealership to have the turbo replaced ouch 2219.00 and the technician called me and asked me if anyone had been messing with my engine, I inquired why he asked and he told me he never seen an engine that clean before and thought someone might be trying to hide some faulty work by cleaning it for me. I informed him I did the cleaning and caretaking on that truck, enjoy working with clean hands for a change!!

 

I do oil and filter at 7500, Rotella and Fleetguard Stratopore. Do fuel at 15K or 1 year if it has been a slow year driving. Air filter has run 30K, even living on a gravel road, it has never been close to used up, but the package comes with one, so I use it. Basically, Genos package takes you through 30K miles, 4 Oil, 2 Fuel, and an air filter.

 

Looked it up seems a good deal for my 01 however they do not offer the air filter for my 07.

 

for two decades cummins has warned not to use K&N filters, Chrysler will void the warranty on a dusted engine with a K&N filter, many independent test prove the K&N is poor. the K&N is good for the economy, it keeps mechanics and parts suppliers in work. we have seen first hand damage caused by the K&N. now if you still want to use one you do not think much of your truck. if it is for your 6.7 just get a psm kit and use stock wix filter. do not change filter until the filter minder tells you to. as dirt fills up the larger holes in the filter media the filter works better. on the big truck engines cummins warns of over servicing the filter for this reason.

 

Hmm, they sell the 6.7 Air Filter, perhaps they don't recommend changing it before 30K? I do know the 6.7 filter is about twice the size of the 5.9.

 

On my engine oil and filter I run 11k-12k oil change intervals(Amsoil oil and filter) which for me turns into some 2-3 oil changes per year. For me it saves about $300-400 per year on using standard oil.

Air filter, Amsoil Nanofibre, has a 4 year 100,000 mile warranty. It's a dry air filter that I clean every once in awhile with a simple air nozzle. I've looked at K&N but have never been impressed or enthused about cleaning my air filter and oiling it down(have better things to do) not to mention the fact that GM has also issued a warning that involves K&N air filters. Two car manufacturers with warnings and I'm not wasting my money. So when I found Amsoils Nanofibre I jumped on it and it's only about $40-50 for 4 years! $25 per year ain't bad!

Fuel filter is changed every six months for certain unless my fuel pressure gets weird.

I may be a bit biased though, like my Amsoil and run it in EVERYTHING, from the husqvarna chainsaw to the welders, cars and trucks.

 

There's nothing wrong with the K&N filtering system, it works very well. The problem is it's high maintenance. Maintained correctly and as intended it's as good as anything else - but that's just the problem - they have to be cleaned and re-oiled routinely and nobody wants to do that. That's the reason why you hear bad reports on them, it's the lack of required maintenance.
I don't run one exactly for that reason. The filtration design works well, but I don't want to pay lots of money for extra work. I'd rather just replace the zero maintenance dry filters, but that's just me....

 

the design does not work at all. cummins had a filter tester set up. where you could put your filter in and it would circulate dusty air through the filter and collect the dust that got through the test filter on a secondary filter. a new K&N out of the box was horrible. i keep that filter in my shop to show others that think they want to use one. vram you need to reread my post.

 

Thanks for the advise carl. You sound pretty confident, but I don't personally know you and I don't believe everything I read on the internet. Your post left me with little hard facts and several questions.
For example, with the filtering demonstration Cummin's put on for you - Obviously they're not big on K&N, so.....what filter were they trying to sell? hint hint Ever see a product demonstration where the star product looses out? I'm pretty sure that if I went to a K&N filter demonstration, it would be the best on the market too...

New in box K&N... Did it get oiled before testing? Properly? Was a tighter secondary collection filter swapped in for the K&N test? I don't know, I wasn't there.

Almost every engine built from the beginning until what? the 60's? had an oiled or oil bath filter on it. Those engines still run well today. I have 3 of them on my farm. One thing I can tell ya is if I change the oil in an oil-bath filter it doesn't take long to turn dark or even black, and after just one summer my goodness is there a lot of crap in the bowl. Paper filters take quite a while before you can tell they've collected anything. Where'd all the dirt go? I know an oil bath is a different kind of filtering system but using oil to collect dust works very well - but the filter NEEDS the oil (and clean oil, once dirty it's useless) to do it.

Could it be that Cummins warns against the K&N because they know that "most" folks who install one will not service it?

I'm thinkin' Chrysler will void the warranty on any engine that has dust in it - doesn't matter who made the filter. You could have changed it before they got it.

"as dirt fills up the larger holes in the filter media the filter works better" - that is true of any filter...

"Many independent tests prove the K&N is poor" - Compared to what? (I've never looked at any tests) A super tight filter that limits air intake enough to choke an engine down some? There are better filters, but they come at some kind of cost.... And with the demonstrations, it just seems like someone's always trying to cheat.

Look, I'm not a big K&N guy and I never have been. I just know the method they use works and has been used for a long long time. So when someone tells me it doesn't work, I get red flags....

 

I'm here to tell you 9812v they don't work on GM's. They had a service bulletin out about the oil getting on the IAT sensor and other things causing problems. They voided warranties over such things. Standard air filters or even high end ones like I have flow better, clean dirt as well or better and are LOW maintenance. Now, if you just like going out and cranking on your truck every weekend and redundant maintenance such as filter cleaning by all means please do. It's one of the most fancy things in the chain auto parts stores, just wanting to make sure folks check what else is in the world before they fall for all the hype...or snake oil sales.

 

Half a million miles on Wix filters, same as Napa Gold.
I my parts Napa has a once a year 90% off filter sale, I stock up.