Thanks for everyone who requested testing air filters and please let me know which brands you want tested in the next round. Also, here's the list of the ones I tested. Thanks again! Products Tested In This Video (in no particular order): EPAuto: amzn.to/3lbyw9E WIX: amzn.to/3aQloBN Fram: amzn.to/3j1stm0 AC Delco: amzn.to/3j2J5tv Purolator: amzn.to/2Qc3pwl K&N: amzn.to/3aJlTh8 K&N Cleaning Kit and Oil: amzn.to/2Qb3Kzk

If KZfaq channels got awards, I would nominate yours for “Most Useful Channel”. 💯

If products had a stamp saying “project farm tested” I’m buying

We've legitimately used this man's videos to change what kind of tools and parts etc that we use on the generators we build at my work, his videos have actually solved some issues we've been dealing with and helped make our products better. Can't give any better praise than that

I just wanted to come back and say thanks for taking the time to do this. There are so many misinformed people and I was one of them before this. I share this video at least once every three months when discussions about air filters and cold air intakes comes up.

Let’s just respect the fact that he counted all those pleates

This guy has more credibility than anyone in our government.

As others have mentioned, would love to see something similar done with cabin air filters. Keep up the great work!

So glad I watched this. Used to swear by K&N, had no idea the potential damage it was causing.

Let’s just appreciate this guy helping answer these age old questions

This guy has a gift. And he doesn't bother us with too much talking. He just gets to the point and tells you what you need to know. I've come to this channel a few times and I haven't wasted anytime with his videos. Very nice and informative. I am grateful!

As a mechanic/ owner operator of a small shop, and a youtuber myself, I love this channel, always very through and well planned out! Stay awesome 😊

I’ve used OEM or Wix for years in a variety of vehicles, so I am very glad the Wix did well. Really appreciate the passion and thoroughness you put into your videos. Looking forward to what’s next, take care!

After all his hard work, he still makes time to respond to every comment. Best KZfaqr ever! Thank you sir!!

Cant wait till "Project Farm approved" stickers

Once again I'm impressed with the high quality comparison and easy to decipher results that you deliver. Thank you for offering the best and most dependable comparisons available on the internet today.

This video is super easy to follow and understand. You are very thorough thru the process and aren’t boring at all. Thank you for helping me understand how this filters work and even answer questions I didn’t know I had!

This channel is more valuable than consumer reports. Seriously. Also, my two brands coming out on top was awesome

I now consider YOUR tests more authoritative than ad's, testimonials, or endorsements. Thanks!

2 years ago I watched this but watching again because I need to replace the filter on my truck. So glad this channel is here

This channel has no equal. It is the best at comparing products out there. Respect

I was an air filter engineer for many years a long time ago at one of the brands you tested. You do a great job, as always and I applaud your very logical and thoughtful approach. However, I'd like to make a few comments about this report. 1. Flour or powder do not make good test mediums. They tend to agglomerate, and in any case do not compare well with industry standard contaminants. 2. During testing, an even distribution of contamination introduction is critical. Thus, semi-random placement of the test medium can drastically affect the test outcome. A typical test set-up involves an aspirated cloud of contaminant for more consistent and even dispersal to assure a more realistic particle size distribution. 3. Industry standard contaminant particle size is inversely proportional to particle count. In fact, the number of particles increases dramatically (exponentially) as size goes down. 4. Engine wear potential is attributable to particle make-up, i.e. Is it silica or organics, etc., and quantity. Thus, engine wear risk drops dramatically with particle size. Internally moving engine parts, especially rings & valves, are not usually affected by very small particles in small quantities. Five microns is about 1/100000 inches. Concern for wear begins around 10,000 microns or below .005". 5. Flow is generally concentrated in any filter, despite shape and flow diverting techniques used. Placement of contaminant on the filter media by hand is less realistic. 6. Contamination which agglomerates will increase pressure drop and increase contamination removal efficiency giving erroneous results. As a function of actual wear potential, the K&N, though inefficient according to your test, may actually be the best protector because of its affinity for the larger silica particles seen in real life. Still, your test report is very persuasive! Thank you for reading!

You can literally see the sun moving, hours ticking off by the effort this man is putting from 7:27-8:40

I have watched this channel explode! you are a very smart person for all of these tests

Thank you. I have been saying it for decades that K&N is great for flow but terrible on filtration. I have seen many diesels with K&Ns come in with dusted turbo wheels (saw blading) with no obvious pre turbo air leaks. I avoid them on all my vehicles.

I sell parts and recommend products based off your results with a recommendation that customers watch your videos. Thank you for what you do Sir.

Particle counter! Dude!! When I first started watching you ..you were like: Lets see how long this lawn mower engine runs on human pee! You are now outdoing Consumer Reports! God, I hope you are getting paid for this. Obviously...awesome job as usual!

You are literally the best at consumer reports!!!

Thanks a lot for your experiment I’m actually getting a new filter for my car this weekend and now I know which brands to look for.

I trust this guy so much that now I just hit "like" on the videos when they start. He's helped me narrow down age old questions.

Sure is nice to have a friend who’s an energetic, resourceful, imaginative genius

Perfect timing for my finding this video. I am just about ready to change the filters in my car and now I know the best ones to get. Thanks for doing the testing!

Just bought a Purolator before I watched this video this makes me more confident in my decision. Thank you!!!

I’m like a neurotic raccoon when it comes air filters, oil filters and wiper blades always wondering who cleans the best. Super interesting.

The amount of effort and detail that goes into your experiments is top-notch

I appreciate you did this. I researched filters online and decided on the WIX. I am glad to see the Purolator is also just as good.

These tests you run are simply amazing. Thank you.

This channel is killing me. Like this dude does the most thorough testing on youtube imo well him and gamer nexus if you're into computers. He has the tools for freaking everything and the few things he doesn't have he creates himself. Then his scientific method is damn near flawless. I'm like this guy needs a lab coat and some googles at least that's what I keep expecting.

This channel is honestly the most useful and fundamental source for everyday applications.

Wow thank you so much, this test has changed my perspective on k and n filters. I have these filters in all of my vehicles, that will now change. God bless and be safe

I usually look for comparison videos till i see yours. Very comprehensive comparisons, thank you good job.

This explains much. When I crashed my Suburban through a bakery with my K&N filter, performance was notably worse. However I was able to make biscuits from the exhaust.

This by far has been the best channel I've ever found. I remember when it was all seafoam and epoxy and a couple thousand subs. You sir deserve an award for all your hard work and dedication. Best content from any testing channel.

Another OUTSTANDING demonstration of what we buy ! Thank you !

This guy is the youtube standard. I love this channel!

I second the oil filter test, we need to know!

I have nothing to add other than - I am SO grateful for the time and effort you put into these videos.

Saw this video and bought a Wix air filter for my new to me 4Runner the next day. Excellent review and an easy video to watch!

Sunt de parere ca faci o treaba avansata si detaliata a produaelor. Bravo, sunt foarte impresi0nat!

By far, the best KZfaq channel I've ever seen. As a head of household, father and handyman, your videos have benefited me the most and helps me to make better decisions with the products I buy. Can't thank you enough for that!

Straight to the point, no wasted 2 minute intro or fluff. Outstanding!

Why couldn't I have had this guy for a science teacher in high school?! Excellent content!

Another cool project might be to test the integrity of wiper fluids at really cold temperatures. Right now the weather in my area is about -4°F and I have wiper fluid that’s supposedly good to -25 and that is not the case. I think a test like that would be cool with some name brands and some generic ones.

Just a suggestion, but maybe add something on your graphs that just clarifies if "lower is better" or "higher is better"

I always bought Fram, now changed to Wix. Thank you

I've been using wix filters for years. This video makes me happy

Your testing setups are AMAZING! Please test cold air intake air filters vs regular air filters

I work at an auto parts store and I usually recommend customers buying WIX, over any of the other filters, watching this makes me feel better about my recommendations that I give out.

One of the best review channels on KZfaq. Don't ever sell out man! Thank you!

You’re just outstanding. These videos and tools you build are Incredible

Just was about to buy an air filter and then I thought to myself I bet project farm already found the objective answer. And here it is posted two years before I needed to buy one. You are a like a textbook and public library put all in one.

I'm not from usa. I don't even own a car. But I still watched your video without skipping once. That's how good your video was.

100% most useful channel on KZfaq, you deserve an award sir!

From the few hundred comments I viewd, I didn't see anyone metioning cold airtakes filters and how much of a difference in hp it makes! Thanks for very informative info and testing! 👍🏽

I love your video as always. You showed us real world test results thoroughly by performing some very well designed tests, which are very informative. Many other "Best Engine Air Filters" videos only showed summarized product highlights from manufacturers, which are pretty useless.

I admire your dedication to your videos! Keep up the hard work. I appreciate all the work you put in!

Would love to see an air filter test of “Performance” air filters like AEM, Air RAID, Spectra,etc. Love the channel, keep up the good work!

I really appreciate your product test. They give real world performance vs manufacturers exaggerated and sometimes fraudulent advertising claims. Thanks.

I watch project over and over. It's like having a library at home.

I love Project Farm for it's high moral compass and not being paid off for results, too bad our politicians can't live up to his level of integrity.

I enjoyed listening to the 0 to 60 runs, gotta love that V8 sound.

Another great video. Thank you. In 2012 I took my 2011 F150 w EcoBoost to Sarasota, FL from Decatur, TX pulling a 22 foot fiberglass boat on a tandem axle trailer. It was a great test of things to improve fuel mileage. I tried octane booster, high-octane pump gas, and even changed to a K&N air filter on the trip. The only difference in fuel mileage came from the high-octane pump gas and then only offered a $0.01/mile savings with the higher cost of the Premium fuel. The K&N made no difference in felt power or fuel mileage the higher flow rates they claim always seemed to indicate inferior filtration which I think you showed here. What always irked me about the K&N chatter was that they reportedly filter better when they are dirty...no kidding...as it gets clogged up, it filters better. I already had bought my last K&N after that trip, this video just underscored that.

Great video!! I've been using Wix for years. Glad to know I've been treating my engines well. I want them to last a LONG time. Performance is definitely down the list for me.

Oil filter comparison would be a good “spin off” of this video

I formerly worked for an automotive parts manufacturer that was represented in this testing. I find PF's testing approach to be VERY credible and findings very interesting. One thing to note, any engine air filter is actually MORE effective at filtering particulate with a bit of age/usage as the previously captured foreign material in the filter media increases the filter's own filtering capacity. That made sense to me during product training years ago, but would have never occurred to me beforehand. There's definitely an argument for NOT changing this filter prematurely as some of us enthusiasts are prone to do with "over maintaining" our vehicles. Just wanted to add this interesting factoid. Nice job PF, love your content!

This man is nothing short of Awesome! I have been watching him for years and I wish some big corporation would see his value and hire him to test products!

Other channels have already covered this, but I'd love your take on testing oil filters. Great videos!

Please do a video on oil filter🙏 you do the best comparison videos and the only person i can trust

i knew my performance felt sluggish when i drove through that bakery with my k&n air filter

Excellent video as usual and thank you so much for going out of your way and always replying to all the comments. You have a great day and always look forward to your videos! Thank you once again

A big thanks for this viideo, Iv been a Wix fan for the last decade or so for my daily drivvers and im glad you conferming my thought!

I know a guy who killed his engine driving on a dry lake bed with a k&n filter. They are a good product, but just know what they are for, and it is not dusty environments. Thanks for the great video.

As the comments have shown, you've helped out so many people out by doing these tests. i hope you've never doubted yourself. thank you for saving me a lot of time, worry, frustration and hard earned money. You're a hero in my book. You and ChrisFix are definitely the most important Auto-Based KZfaqrs. So many of us rely on your experience. You're doing an amazing job.

I love coming back to this video because thanks to you i discovered the best overall engine and cabin filters...WIX 💪💯

Three years ago, and I just saw this on my feed. I’ve been using EP because they’re cheap, and I change often, but I think I’ll go with Wix from now on. This isn’t the first time I’ve switched a brand of product because of PF, thanks for the time and careful effort you put into your testing!

This is gold. Let us all know when the sore loser companies start coming after you, we got your back.

I'm a filtration test engineer for a living and, I have to say, nice job for a DIY style setup. We use pretty stringent guidelines on contamination and particle testing, but your setup was a good idea for a general idea of how the filters perform. The only thing I'd recommend on this one is to think about the fact that a lot of filters are designed for the rated flow-rate of the engine inside the O.E. air box. Air dynamics across a plate mounted filter can do funny things to the measured restriction and cause it to spike or fall compared to when it's installed in a vehicle. You might be surprised how different the pressure loss can be in those situations. Other than that, nice job.

Legitimately changed up everything I use based on your videos, now I have all the tools and equipment I need and trust. Thank you.

Always appreciated the quality of testing. Thank you!

The amount of work and effort that goes into these videos, we really appreciate it, thank you

And this is why I buy Wix filters for everything.

This was a winner: owning and riding a vintage BMW motorcycle I want all the power available, but I ride 25,000 miles a year. Knowing what keeps particulates out of my Siebenrock powerplant long haul is wonderful. Thanks.

Another grand slam test!! Great job, and it was very helpful and informative.

Fixing cars for 20years, and I have always believed that Fram was quality untill i saw this and the oilfilter test. Will never buy Fram again.

I'd love to see an automotive wax showdown. Mothers, Meguires, Turtle Wax, Griot's Garage, Zymol, etc... maybe even paste vs liquid.

I appreciate the comparison of the filter and agree with your suggestion that the more expensive filters are not necessarily the best.

I like the analytical way you examine the various products. You do not have a per determined idea of which one will be the winner. Thanks for the insights.

Lesson learned- don’t dump flour into the intake!

I swear you do all the comparisons that I didn't know I wanted to know! Ya gotta do oil filters though! Keep up the good work!

Just got asked to rate your channel. Gave a full smiley face, and said your channel was informative and useful.