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Re: UOA with K&N [Re: TiGeo] #5246964 10/22/19 11:38 AM
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Smokescreen Offline
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Filtration aside, I'll bet the Stage 2 mods allow this sled to scoot pretty good.


13 Civic Si 2.4L-105Kkms(66Kmi)-QSUD,Wix
05 LeSabre 3.8L-294Kkms(184Kmi)-QSUD,Wix
03 Sierra 2500 6.0L-209Kkms(130Kmi)-QSUD,Wix

All with mpg > EPA
Re: UOA with K&N [Re: Smokescreen] #5247005 10/22/19 12:27 PM
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TiGeo Offline OP
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Originally Posted by Smokescreen
Filtration aside, I'll bet the Stage 2 mods allow this sled to scoot pretty good.


It's mind blowing really (to me). I'd say it sits nicely in the low 4 sec 0-60 time...that's faster than most of the stock tuner cars....and it's a wagon!


2018 VW Atlas SEL 4Motion 3.6 - Castrol OE 5W40 VW filter
2018 VW GSW S 4Motion 1.8 Unitronic St2 IS20 - LiquiMoly 5W40 VW filter+Ceratec/MoS2
2013 Ford Focus SE HB 2.0 - MC syn-blend 5W20 MC filter
Re: UOA with K&N [Re: TiGeo] #5312456 01/03/20 06:43 PM
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The bad K&N thread is doing really well, 7 pages now and they are foaming at the mouth. This thread has only got to 2 pages and is almost off the front page.


1987 BMW R65 - Penrite VTwin 20-50
2005 Nissan Expert - 5W-30 Castrol Edge
1996 Volvo T5 - Penrite HPR15 - 15W-60. Ryco syntec filter.
Re: UOA with K&N [Re: TiGeo] #5314983 01/06/20 04:45 PM
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Clayslayer Offline
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My 2002 VW Jetta has had a majority of its 420,000 mile life with a K&N filter. I stopped using it a few years ago when my MAF went bad. In the filter's defense I probably over oiled it or something similar. Or the MAF just went bad. Or something... K&N filters air just fine. My 2010 Hardley Ableson FLHTK has had nothing but a big fat K&N ventilator it's entire life. Granted it's just over 10% of what the VW has done but still. I can't poo on K&N filters. I've seen the horror stories. Heard that they cause world famine, uncontrolled fires, and angry little girls talking about climate change. How dare they?

Re: UOA with K&N [Re: Clayslayer] #5315123 01/06/20 07:08 PM
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TiGeo Offline OP
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Originally Posted by Clayslayer
My 2002 VW Jetta has had a majority of its 420,000 mile life with a K&N filter. I stopped using it a few years ago when my MAF went bad. In the filter's defense I probably over oiled it or something similar. Or the MAF just went bad. Or something... K&N filters air just fine. My 2010 Hardley Ableson FLHTK has had nothing but a big fat K&N ventilator it's entire life. Granted it's just over 10% of what the VW has done but still. I can't poo on K&N filters. I've seen the horror stories. Heard that they cause world famine, uncontrolled fires, and angry little girls talking about climate change. How dare they?


I had a 2000 Jetta and I too had 2 MAFs....without K&N. It was a known problem. This is just it...folks running K&Ns were saying their MAFs were going back and it was automatically being blamed on the filter often by crappy service departments to get out of warranty repairs...this IMHO is how the whole legend got started. The oil can't come off...it's been shown. The videos also explain that they have analyzed the MAFs that were sent back to them by customers stating the filter caused it and there was no oil found on the sensors. The MAFs are really just going bad as parts do. Yes, K&N is responsible for the attack on Iran last I heard.aahahaha


2018 VW Atlas SEL 4Motion 3.6 - Castrol OE 5W40 VW filter
2018 VW GSW S 4Motion 1.8 Unitronic St2 IS20 - LiquiMoly 5W40 VW filter+Ceratec/MoS2
2013 Ford Focus SE HB 2.0 - MC syn-blend 5W20 MC filter
Re: UOA with K&N [Re: TiGeo] #5352959 02/17/20 06:20 PM
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TiGeo Offline OP
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Here's my latest UOA and this is after 9K miles on the Liquimoly Leichtlauf High Tech 5W40 oil (longest yet) AND beating the snot out of the new Stage 2 tune and larger GTI turbo. Still appears the K&N is doing a fine job at 30K miles in. I removed it at the last change (21K) and knock-out out the large stuff - I have my front air duct modified to let more air in/easier flow to the air box so I do get larger debris/bugs in there. I'll take it to 50K per K&N's directions and clean/re-oil then.

Inked18 GOLF SW-200210_UOA_30K_clean.jpg

2018 VW Atlas SEL 4Motion 3.6 - Castrol OE 5W40 VW filter
2018 VW GSW S 4Motion 1.8 Unitronic St2 IS20 - LiquiMoly 5W40 VW filter+Ceratec/MoS2
2013 Ford Focus SE HB 2.0 - MC syn-blend 5W20 MC filter
Re: UOA with K&N [Re: TiGeo] #5356962 02/22/20 12:38 AM
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Farnsworth Offline
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I don’t understand now, uoa is supposed to test oil filters and air filters?

Re: UOA with K&N [Re: TiGeo] #5356970 02/22/20 01:13 AM
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ZeeOSix Offline
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The UAO should show more silicon and more wear metals if the air filter isn't doing a good job at filtering dirt out of the air.

Re: UOA with K&N [Re: Farnsworth] #5357163 02/22/20 09:55 AM
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Originally Posted by Farnsworth
I don’t understand now, uoa is supposed to test oil filters and air filters?



Clarify. Is it the "silicon" the oil filter misses, or the air filter? It is both isn't it? So which are we talking about here?" How can it be known? Silicon would be from minerals. Actually silicon oxides. Insoluble silicon isn't going to be found in oil at all.

Re: UOA with K&N [Re: Farnsworth] #5357196 02/22/20 10:32 AM
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kschachn Offline
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Originally Posted by Farnsworth
Clarify. Is it the "silicon" the oil filter misses, or the air filter? It is both isn't it? So which are we talking about here?" How can it be known? Silicon would be from minerals. Actually silicon oxides. Insoluble silicon isn't going to be found in oil at all.

Any silicon that appears in a UOA is from a compound far too small to be captured by an oil filter. So yes it is both, but unless it is coming from inside the engine (such as a sealant) then the primary fault is with the air filter. It wouldn't matter if it is soluble in a hydrocarbon or not as both would show up in the UOA (but I wouldn't know of any soluble silicon compounds).

Of course a UOA cannot distinguish the origin of the silicon since any compounds are decomposed in the ICP plasma. But at the same time there aren't a lot of sources.


1994 BMW 530i, 252K
1996 Honda Accord, 288K
1999 Toyota Sienna, 434K
2000 Toyota ECHO, 284K
Re: UOA with K&N [Re: Farnsworth] #5357451 02/22/20 05:05 PM
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Run your engine without an air filter and see what the silicon and wear numbers go to.

Re: UOA with K&N [Re: kschachn] #5357504 02/22/20 06:34 PM
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Originally Posted by kschachn
Originally Posted by Farnsworth
Clarify. Is it the "silicon" the oil filter misses, or the air filter? It is both isn't it? So which are we talking about here?" How can it be known? Silicon would be from minerals. Actually silicon oxides. Insoluble silicon isn't going to be found in oil at all.

Any silicon that appears in a UOA is from a compound far too small to be captured by an oil filter. So yes it is both, but unless it is coming from inside the engine (such as a sealant) then the primary fault is with the air filter. It wouldn't matter if it is soluble in a hydrocarbon or not as both would show up in the UOA (but I wouldn't know of any soluble silicon compounds).

Of course a UOA cannot distinguish the origin of the silicon since any compounds are decomposed in the ICP plasma. But at the same time there aren't a lot of sources.

So larger silica particles say like 50 u would be sources of silicon in the element analysis? Engines have the fill hole and oil level stick hole which could a great source of silica into the oil. I know in earlier times I could check oil, miss the hole, then find the hole all the while covering the end of stick with the dirt that is everywhere. Now I am very careful.

Re: UOA with K&N [Re: TiGeo] #5358351 02/23/20 07:51 PM
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I prefer dry filters. I’ve got a AFE in my Tacoma and a AEM in my wife’s Honda Pilot. I’m about to hit 60K on the AFE. It got is first cleaning with a air nozzle at 30K ago. This time I may not touch it.


2015 Tacoma 4.0L 60K (as of 02/23/18)
AMSOIL SS 0W30 / Toyota filter

2018 CRV 1.5L (as of 05/11/18)
Factory fill / Honda filter
Re: UOA with K&N [Re: Farnsworth] #5359573 02/25/20 09:04 AM
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TiGeo Offline OP
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Originally Posted by Farnsworth
I don’t understand now, uoa is supposed to test oil filters and air filters?


Silicon and insoluables are effectively a poxy for "dirt" that is in the oil due to poor filtration. Sure, there can be dirt getting in and fully combusted that exists through the exhaust. There can be dirt that gets in, gets past the rings and into the oil that the oil fitler grabs. It's just a peek at what may be going on and I figure a company that tests oil for a living probably understands these numbers and what they mean.


2018 VW Atlas SEL 4Motion 3.6 - Castrol OE 5W40 VW filter
2018 VW GSW S 4Motion 1.8 Unitronic St2 IS20 - LiquiMoly 5W40 VW filter+Ceratec/MoS2
2013 Ford Focus SE HB 2.0 - MC syn-blend 5W20 MC filter
Re: UOA with K&N [Re: TiGeo] #5371738 03/09/20 04:29 PM
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TiGeo Offline OP
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Dig Project Farm's videos. Should be no surprise - the K&N flows the best and conversely filters the worst.

https://www.youtube.com/watch?v=sJ3L-E-ufYo

Last edited by TiGeo; 03/09/20 04:35 PM.

2018 VW Atlas SEL 4Motion 3.6 - Castrol OE 5W40 VW filter
2018 VW GSW S 4Motion 1.8 Unitronic St2 IS20 - LiquiMoly 5W40 VW filter+Ceratec/MoS2
2013 Ford Focus SE HB 2.0 - MC syn-blend 5W20 MC filter
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