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Engine airfilter

Sailorjoe

New Member
Feb 23, 2019
5
2
Truck Year
2014
So I feel a bit stupid as I have been worrying about a drop in mileage from the typical 22-23 mpg around town in the summer and 20-21 in the winter down to 18 in the winter. I live in upstate NY so winter can be cold. So I have been thinking all sorts of bad thoughts about whats going on having read other postings on this and other forums.
The other day I fitted a new air filter and what a difference. Mileage is back where it should be and truck has all sorts of get up and go.
Old filter did not look dirty but obviously was restricted. It had 25K miles since last changed.
Message to self.
Replace air filter regularly at 10 to 15K miles
 

Jerod

New Member
Jun 15, 2019
13
2
Truck Year
2015
Does K&N make a air filter for the ecodiesel and does it work righr?
 

Swashplate97

New Member
Jul 7, 2019
20
4
Truck Year
2017
Does K&N make a air filter for the ecodiesel and does it work righr?
Ive been running the K&N since my odometer had 250 miles on it. Main reason I installed it was because I lived out in the desert with lots of dust storms and I wanted the oil in the filter to stop it from making it into the engine. Noticed quicker throttle response and slightly better mpg with it. If there is any improvement in hp, its not been noticed by me. As far as the mpg, it gets me about an extra 3-4. Just remember to de-grease and recharge it routinely depending on your environment.
 

John

Well-Known Member
Nov 13, 2015
1,186
386
Ive been running the K&N since my odometer had 250 miles on it. Main reason I installed it was because I lived out in the desert with lots of dust storms and I wanted the oil in the filter to stop it from making it into the engine. Noticed quicker throttle response and slightly better mpg with it. If there is any improvement in hp, its not been noticed by me. As far as the mpg, it gets me about an extra 3-4. Just remember to de-grease and recharge it routinely depending on your environment.
I'm surprised to hear there's any increase in MPG since the stock filters flows more air than the turbo can handle,
 

Swashplate97

New Member
Jul 7, 2019
20
4
Truck Year
2017
I'm surprised to hear there's any increase in MPG since the stock filters flows more air than the turbo can handle,
Yeah, I went from 26-27 mpg to about 30-31 on my 65 mile cruises in northern NV. I have driven the same ever since I bought the truck.
 

cs in Alabama

Active Member
Feb 21, 2019
522
135
Truck Year
2015
If those filters did anything near those numbers - even .1 mpg more, the automakers would use them. They don't.

They also don't use them because they allow fine particulate to slip by the filter when they are not perfectly maintained.
 

Swashplate97

New Member
Jul 7, 2019
20
4
Truck Year
2017
I never tried to endorse them, just stating my experiences with it. Your right, there is some upkeep on them, I clean and recharge about every 3k. The recharge kit is still way cheaper than a new paper filter and I have recharged mine 4 times off the same $12 recharge kit.
 

John

Well-Known Member
Nov 13, 2015
1,186
386
We weren't thinking you were endorsing them. We were just saying in a nice way that the MPG gain is not possible.
 

Swashplate97

New Member
Jul 7, 2019
20
4
Truck Year
2017
Again, just stating my results, guess I got the lucky filter or my MPG calculator is broken... got nothing else.. prior to buying my Ecodiesel, I had a 99 Silverado that gave me right about a 2 mpg increase on it(had to use math for that old thing) brought me right up to 18 mpg.
 

John

Well-Known Member
Nov 13, 2015
1,186
386
I don't know anything about the silverado, but the ecodiesel can't accept any additional airflow without a turbo upgrade.
 

GearHead

Active Member
Sep 13, 2016
380
133
Truck Year
2014
Does K&N make a air filter for the ecodiesel and does it work righr?
Yes, fits stock air filter box. Have one in my 2014 RAM, works fine, have Oil Analysis to prove no increase in dirt ingestion. Clean properly, oil properly, no issues. Noticed no permanent increase in fuel mileage but performance is more consistent, and by the time I don't buy a paper air filter every 10K miles for the life of the truck I will be hundreds of dollars ahead.
 

GearHead

Active Member
Sep 13, 2016
380
133
Truck Year
2014
they r not recommend they will void warranty so I am told
FCA official stand is "no comment" or a large amount of legalese which amounts to "it depends on the dealer" as FCA does not void warranty for a K&N air filter.
 
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