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Reason I Only Use Hyundai OEM Air Filters Now ! #5461279 06/24/20 07:24 AM
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ChrisD46 Offline OP
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*I bought an after market air filter , used for less than 10K miles and during that time I had a UOA that showed increased levels of silicon . I checked the slide in after market air filter and it was relatively clean so the high levels of silicon perplexed me . In order to try and remedy the problem I bought a genuine Hyundai Air filter for my 2017 Sonata and installed it : What I first noticed was the snug fit while being installed - no side ways wiggle at all as compared to the after market air filter . Also when comparing the two air filters the Hyundai air filter has wider gasketing material than the after market air filter . What I conclude is that after comparing the the Hyundai OEM air filter against the after market filter is while the filter media appeared similar , both had twist locking tabs - the Hyundai air filter has a wider gasket and a tighter fit with no side ways play at all . I now believe dirt (silicon) levels increased in my UOA with the after market air filter because silicon was skirting around the loose fit of the after market air filter and sneaking into the engine from the sides of the loose fitting after market air filter . Perhaps not all after market air filters are not loose but I do not want to find out . In my case , Hyundai OEM air filters fit best and due to my previous UOA increased levels of silicon with the after market air filter I have permanently switched to Hyundai OEM air filters for my Sonata .


'17 Hyundai Sonata 2.4L GDI 5W30 PUP / Fram Ultra #9688
'10 Hyundai Elantra 2.0L 5W30 (50%) / 5W20 (50%) QSUD / Fram Ultra #9688
'07 Kia Sedona 3.8L 5W30 Castrol EP / Fram Ultra #9999
Re: Reason I Only Use Hyundai OEM Air Filters Now ! [Re: ChrisD46] #5461285 06/24/20 07:36 AM
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frankbee3 Offline
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I noticed a tighter fit with the Toyota OEM air filter for my 1992 Pickup. It’s a shame I just bought a couple of Wix filters for the Toyota and Subaru. I am reluctant to use them now..


1992 Toyota Pickup
2001 Mazda Miata
2003 Dodge Ram 2500 Cummins
2008 Subaru Outback
Miscellaneous Yard tractors and lawn mowers
Re: Reason I Only Use Hyundai OEM Air Filters Now ! [Re: ChrisD46] #5461303 06/24/20 08:11 AM
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Pelican Offline
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OEM always fit better, unless one goes to TOP quality aftermarket, but then the price difference is almost none.
I only go with aftermarket if I can find something better, not just cheaper. Life experience.

Re: Reason I Only Use Hyundai OEM Air Filters Now ! [Re: ChrisD46] #5461306 06/24/20 08:23 AM
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ARCOgraphite Offline
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A few years ago I tried a FRAM A. in our last Forester, and the frame was so warped I couldn't close the airbox.

Brought that back but there was no more in stock.

Q.C. issue with cycling the over mold process too fast - I would guess.

Otherwise, I had luck with Fram AF's

On the Nissan, I had to seek out bottom tier STP air filters as most of the

"Quality" ones didn't pass any air !

Ill take Power of pristine efficacy all day - for my cars.

So If you are experiencing WOT no-power issues, that is a place to look.


2019 VW Jetta S 6MT OCI#2 7378mi-MOTUL Specific VW508.00+VW Service Filter; '17 Subaru Crosstrek CVT OC#9 70254mi-Rotella
Gas Truck 5W20 + Fram Ultra 7317 Filter
Re: Reason I Only Use Hyundai OEM Air Filters Now ! [Re: ChrisD46] #5461322 06/24/20 08:56 AM
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ryster Offline
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Recently replaced the air filter on my parent's Highlander. The OEM filter had a strange pressed felt/molded pulp type of gasket that seemed kind of chintzy. I replaced it with a Champion air filter from Pep Boys and it had a full rubber gasket around the edges that made for a MUCH tighter seal on the airbox. The filter media on the Champion filter was also more robust than the Toyota filter.

I use after market air filters on my Chevy and never had any issues. I usually just buy based on price and availability (nothing ultra cheap, nothing high end) and replace the air filter every 12 months so they never really get all that dirty anyway.


2015 Chevrolet Equinox LT AWD
3.6L V6
Re: Reason I Only Use Hyundai OEM Air Filters Now ! [Re: ChrisD46] #5461366 06/24/20 09:58 AM
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MONKEYMAN Offline
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I replaced air filter on my '99 Saturn with Napa/Wix. That car and the filter sucked. Within 3k miles the filter had a 1 inch hole in it. I hear you. Based on my previous experience I only buy OEM air filters now. You never know what you will get with aftermarket.


Truth alone triumphs, not untruth.

2017 Elantra SE
Re: Reason I Only Use Hyundai OEM Air Filters Now ! [Re: ChrisD46] #5461386 06/24/20 10:33 AM
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Rat407 Offline
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No issues here with Car Quest air filters. Interesting info for sure though.


2014 Cruze Diesel 5w-30 AMSOIL
Re: Reason I Only Use Hyundai OEM Air Filters Now ! [Re: ChrisD46] #5461443 06/24/20 12:00 PM
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dogememe Offline
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You had one defective filter and now all aftermarket filters are garbage. Huh.


2010 Ford Escape 2.5 ~104K Miles: AMSOIL Signature Series 0W-30, Wix Filter.
2001 Chevy Suburban 5.3 ~293K Miles: Valvoline Maxlife 10W-30, ACDelco Filter.
Re: Reason I Only Use Hyundai OEM Air Filters Now ! [Re: ChrisD46] #5461527 06/24/20 02:16 PM
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mclasser Offline
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Will keep this in mind when it comes time to change the air filter in my Elantra.


2018 Hyundai Elantra VE
2013 Honda Pilot EX-L 4WD
2002 Honda Accord EX-L

Re: Reason I Only Use Hyundai OEM Air Filters Now ! [Re: ChrisD46] #5461570 06/24/20 03:23 PM
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Jeffs2006EvoIX Offline
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Well, Not sure what to tell you. I have used aftermarket filters on my wifes Sonata for 9 yrs. 2012 Sonata GLS we bought new in July 2011. I changed the oil every 5k miles with Castrol Edge EP 5/20 using whatever air filters were on sale at Rock Auto and used the "Premium Guard" oil filters also through Rock Auto. Had UOA's done with zero issues.

You may want to check your air intake hose clamps. Maybe they are lose? Or maybe your TB clamps are lose. Dirty air is getting in somewhere, but I doubt its because of aftermarket filters.

Just my 10 cents. Over 9 yeas and 100k plus miles on our Sonata.


"You don't have to be crazy to do this... But it helps." Bob Ross.
Re: Reason I Only Use Hyundai OEM Air Filters Now ! [Re: dogememe] #5461954 06/25/20 01:32 AM
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ChrisD46 Offline OP
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Originally Posted by dogememe
You had one defective filter and now all aftermarket filters are garbage. Huh.

*Pwerhaps should have stated : Make sure you get a snug fit with no side to side play in your choice of after market air filters .... Air intake system is good (no lose hoses clamps , etc.) I'll test again with another UOA and see how my silicon levels look with the new air filter .


'17 Hyundai Sonata 2.4L GDI 5W30 PUP / Fram Ultra #9688
'10 Hyundai Elantra 2.0L 5W30 (50%) / 5W20 (50%) QSUD / Fram Ultra #9688
'07 Kia Sedona 3.8L 5W30 Castrol EP / Fram Ultra #9999
Re: Reason I Only Use Hyundai OEM Air Filters Now ! [Re: ChrisD46] #5462225 06/25/20 10:04 AM
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ARCOgraphite Offline
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I don't know if some side-to-side play is a problem.

O god seal is more about the perimeter getting a good light to moderate compression seal.

If course if the side to side is so sloppy that one edge would fall off that step or ledge - then you are in trouble !

-Ken


2019 VW Jetta S 6MT OCI#2 7378mi-MOTUL Specific VW508.00+VW Service Filter; '17 Subaru Crosstrek CVT OC#9 70254mi-Rotella
Gas Truck 5W20 + Fram Ultra 7317 Filter
Re: Reason I Only Use Hyundai OEM Air Filters Now ! [Re: ChrisD46] #5462283 06/25/20 11:04 AM
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buddylpal Offline
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The air filter box on the Sonata and I think other models with the Theta II engine, is a bad design to me. It’s not a “drop in filter” but it’s what I would consider a “slide in filter”. There is no way to verify if the filter has seated securely once you slide it into the air box. The Fram filter for this application has a type of cellulose seal instead of the rubber seal. I think this is a better design for this air box. It seems the rubber seal can make it difficult to get a perfect seal because the rubber can bind up and get stretched out on the mating surfaces of the air box. Some people have recommended using Vaseline for years on the rubber seals for this very reason. It needs to slide easily.

Fram recently ditched the rubber seal on the AF for the Chevy cobalt too. Went to a cellulose seal and they are much easier to install now.

Re: Reason I Only Use Hyundai OEM Air Filters Now ! [Re: ChrisD46] #5465371 06/29/20 06:09 AM
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Robster Offline
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Originally Posted by ChrisD46
Originally Posted by dogememe
You had one defective filter and now all aftermarket filters are garbage. Huh.

*Pwerhaps should have stated : Make sure you get a snug fit with no side to side play in your choice of after market air filters .... Air intake system is good (no lose hoses clamps , etc.) I'll test again with another UOA and see how my silicon levels look with the new air filter .


Hey Chris. . . what did your silicon levels jump from / to in that UOA? Just curious how much of an impact it was. . . .


2017 RAM 1500 Big Horn 5.7L:Valvoline AFS 5w-20, Fram TG10060
2019 Hyundai Santa Fe Ultimate AWD 2.4L:Valvoline AFS 5w-20 / OEM filter
2013 Victory Cross Country:Valvoline 4T syn 10w-40, NAPA Gold
Re: Reason I Only Use Hyundai OEM Air Filters Now ! [Re: ChrisD46] #5468290 07/02/20 09:48 PM
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hardcore302 Offline
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I bought a filter, forgot which brand, for the Trax. It was orange. Fit like garbage. Returned it.

Last edited by hardcore302; 07/02/20 09:49 PM.

2007 Ford Mustang GT, 2020 Ford Explorer XLT 4WD, 2016 Chevrolet Trax LT AWD
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