Originally Posted by jetskifast
If K&N CAI so bad for any engine, my real life experience must be fluke with K&N CAI install experience.
Installed K&N COI at 500 miles on my wifes 2001 Grand Cherokee limited 4.7. Traded in at 207,000 miles, not one problem with motor. Ran like new at 207,000 miles.
Installed K&N CAI on my 2001 Chevy s10 2.2 at 2500 miles. Sold at 190,000 miles. Not one problem with motor, ran like new.
Installed K&N CAI on my 2005 Tundra limited 4.7 at around 500 miles. Sold at 110,000 miles, engine ran like new.
Just real life experience with K&N CAI.
K&N CAI really damaged my motors letting in all that dirt
Will install K&N CAI on my diesel when CARB number is approved.
Well Mr Jetskifast I don't know where to begin but lets give it a shot;
Did you actually look on the inside of any of those motors you ran for hundreds of thousands of miles while sucking in all that extra fine particulate and silica (That would be sand to the layman a term for which you surely qualify) to see the damage all that extra dirt may have caused?
Have you ever torn an engine apart and actually seen engine bearing damage?
Do you even know what engine damage looks like?
Did you notice that your engine oil became black and clogged with extra dirt that your K&N filter didn't catch but an OEM paper or aftermarket synthetic media filter would have, before it entered your intake?
I'm guessing the answer to all theses questions is no!
The popular misconception is that K&N oiled cotton gauze filters can achieve a higher air flow thru their filters while still maintaining the ability to filter fine dirt particles at the same time. If you do some research on the topic you can find the truth. K&N's mass media marketing glosses over this simple truth!
You can do a simple test with your own vehicle to prove this point. Run 5000 miles with the OEM paper filter, any brand of quality motor oil, and oil filter. Save an oil sample after this 5K mile run. Replace your OEM paper filter with an oiled K&N filter. Run the same 5K miles with the same brand oil and filter and save an oil sample from this run. Now send both samples off to oil analysis and report back what the lab tells you. Blackstone labs will do this testing relatively cheap. What do you think you'll find??
I can tell you from experience the oil sample from the oiled K&N filter will look visibly darker than the OEM paper air filter sample because of all the fine dirt particles suspended in your oil that the K&N filter did not
Oil analysis will show
more silica and fine particles suspended in the K&N sample than that of the OEM paper filter.
Thats the plain truth!
If you want to look further into it, enjoy;
Filtration Testing for Amsoil, K&N, Napa, Jackson Racing, Baldwin, and Mazda air filters on a Miata
If you still don't believe try to imagine this analogy;
If you couldn't see your teeth while brushing them how would you know their clean?
How would you know the toothpaste and toothbrush your using are working? Simple right, you can easily see & feel them to know one way or the other. Right?
Now how do you know the inside of your engine is clean? How do you know that fine particulate isn't scoring your cylinder walls and bearings? How do you know that the extra dirt entering your engine while you used a K&N oiled cotton gauze filter isn't cooked onto the inside of every engine surface?
None of those things can happen if you don't allow the extra dirt into your engine in the first place, can it?
If all that extra dirt in your engine doesn't bother you it won't bother me either....... It's your Jeep!