vmax

the K&N filter for my 5.0/2013 is only 1/2 the thickness of the factory paper filter

Pretty much all of the other K&Ns I have ran have been at least as thick as the factory one.

shazam

visit the oil change hobbyist web sites, like bobistheoilguy They notice that the K&N equipped cars consistently have higher silicon content in the oil than those with OEM filters.

OEM is good enough.

riverryder

I just put one in my 12 and noticed the same thing...didn't really concern me though...as long as I get the benefits of the K&N. I have used them for years and have always been satisfied.

vmax

I ran a K&N for 5 years on my last truck with Mobil 1
I tested the used oil for a spell to see how far I could run it.
None of those test indicated higher than normal silicon and I run up dirt roads several miles per week.

STi489

I have used K&N filters in many of my old cars but not anymore! The paper stock filters are better at collecting dirt. also that oil can start to mess up the mass air sensor...invest in some fast drying electronic cleaner to clean mass air sensor.

smcox1

I've never trusted K&N.

GTXKen

One word - WIX

vmax

well guys... I;m back to report that I am taking back the new K&N filter today and putting in the factory air filter.

for one thing, the silicone casing the K&N is made of was almost too thick and made it a big pain to get the air box back right but the real deal killer for me was today when I made a highway trip that I make for work a lot and got 2 miles per gallon LESS with the K&N than I did yesterday with the factory filter in there.

I ran the same stretch of highway, same conditions, same tank of gas and it I reset my MPG calculator and I was getting a full 2 mpg less and the only thing I changed since yesterday was the filter.

I have changed my mind about K&N.
I have had the opposite effect with my GM Suburbans, some of them getting up to 1 mpg more with a K&N.

I'm putting it back in the box and returning it right now.

screwd

Just traded in a vehicle I ran K&N in for 100k miles and 12 yrs. Never had a problem. I don't think it really matters, or at least its not top of the list of dos or donts. I'll probably stick to disposables for the new truck.

vmax

I came home at lunch and put the factory filter back in and returned the K&N
The guy at the counter also has a new F150 and he runs a K&N
I asked him how it fit and he told me it was very hard to install and he actually broke off one of the plastic hold down tabs on his factory air box

I told him the problem I just had and he took it back no problem.
I ran around some more after lunch and my mileage was right back where it was before.

K&N just messed up in this application as far as I am concerned.