It is time to change the Fac air cleaner now so I looked at the different offerings, costs and benefits.

I decided to get the K&N filter and down tube kit, 63-1568. I called K&N and ordered the tube, rubber grommet, and 2 band clamps $91.85 (part nos 087276, 2 of 08671, and 08695) and Walmart has the 33-5005 filter for $71.25. Tot $163.10

All with lifetime warranty and 100K between cleanings.

While I was at it I also got the Fumoto solid brass American made F104 quick change, oil pan drain plug replacement drain valve and LC-10 clip from the fac direct for $31 and change delivered.

Little things like these makes life so much easier.

 

Nooooooooooooo....you didn't buy a K&N for a diesel did you???

(do a search on here)

 

Just picked up a K&N flat pane replacement for my 2016.

Have never had a problem is any of 8 cars that have running them for years.

 

cars are all diesels?

 

Cruze Diesel
2 Ram Diesel (5.9 vs 6.7)
2 Powerstokes (7.3 and a 6.0 that I had )

Then a camaro and a charger....so most of them

 

Ya a k&n filter would be the last filter I would ever put on. I am guessing you didn't get enough miles on your 5 diesel vehicles to see what a k&n filter can do to your internals. Their is a reason the manufacturers don't use them in new vehicles.

 

I've had K&N on two now. The first now has over 200k and both got serviced this weekend. Every time I change the oil it gets washed and serviced. I also wipe the inside of the tube and the turbo surface with a white cloth and there has never been a spec of anything inside either.

 

I have put about 2 million miles over the years with K&N filters in CDs and never had one single problem. Combination of Rotella Donaldson K&N have worked well for me.

I clean the K&N every 10-15K and never had a problem,

but

hey on the internet they say hahaha

 

My best mileage with out KN filter and DOWN PIPE was between 16.7 and 16.9

actual mileage and fuel used on 600 mile trip

speed limit plus 10MPH 297.7 total miles fuel used 15.95 18.67 MPG to destination

speed limit 300.00 miles total fuel used 14.59 20.56 MPG on return trip

KN filter and down pipe gives plus 1.8-9 to 3.6 MPG better fuel mileage.

Exc return for min $ invested.....

 

Many diesel truck owners find the results of the so-called "Spicer Test" pretty convincing that K&Ns just aren't cut out for diesel engines. Out of all your choices, K&N comes in about dead last. Why risk it? The paper Fleetguard filters return great mpgs over time while providing excellent protection for your engine. Less hassle too.

Here's one place you can find it:

ISO 5011 Duramax Air Filter Test Report

Summary graphic:



I had an S&B for awhile on my 2003 and it occurred to me one day that "Darn, those Cummins engineers sure know a thing or two more than I do about these engines. Maybe there's a reason they specify the dry, pleated paper filters" and I got rid of it- never looked back.

 

It has nothing to do with what I have read on the Internet. It has everything to do with what I see in the shop time and time again. The fact you have put on about 2 million miles over the years means very little when you don't state how many trucks that's been with. The graph above should be an eye opener for someone that believes a k&n style filter can flow more air and filter better at the same time.

I have personally seen over a dozen pickup engines dusted with an unknown cause. You know what nearlly everyone had in common with one another? They had a k&n filter installed on them. They were both ford and dodge diesel trucks. I haven't kept track but I bet those trucks didn't collectively make it 2 million miles.

It makes no difference to me what filter you use on your truck, but the fact is a k&n style filter does not filter addiquitley for use on a diesel engine.

 

Also if the k&n filters are of such superior filtering why is it that they are not oem for any diesel manufacturer?

 

Why isn't Rotella installed from the manufacturer?


because for the same reason upgraded AF are not, bean counters and OE cheaper..

 

how many look below......

 

Harvie does the above chart make you think that the k&n filter might not be the best filter choice or is this of no value to you?