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03-13-2015, 11:41 PM
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#1
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Senior Member
Join Date: Aug 2014
Posts: 104
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K&N Filters
I have a 2013 Thor ACE with a V10 on a Ford Chassis. I have been told that a K&N filter will give me an extra 2-3 MPG is this true
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03-14-2015, 12:28 AM
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#2
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Senior Member
Monaco Owners Club Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 13,152
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No.
Years ago I experimented with a K&N and all I got was less money in my wallet.
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2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
Criticism is easier than Craftsmanship
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03-14-2015, 12:57 AM
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#3
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Senior Member
Join Date: Sep 2014
Posts: 128
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That's a good one. No you will not realize that kind of gain. In all honesty I don't know that you will gain anything at all with the aftermarket filter (mileage or HP). I have given them plenty of my money over the years.
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2006 Fleetwood Discovery 39S
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03-14-2015, 05:40 AM
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#4
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Senior Member
Monaco Owners Club Texas Boomers Club
Join Date: Jan 2009
Posts: 2,529
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And if you travel to far from home, you'll fall off the "the Earth".
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Hal & Ginny Miller '04 Beaver Santiam PRT40
'04 Saturn Vue - US Gear Brake - Blue Ox tow
3"girls" (2 Irish Setters - 1 Retriever) - RIP Annie & Emily (12/26/2017)
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03-14-2015, 06:34 AM
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#5
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Senior Member
Fleetwood Owners Club
Join Date: Jun 2009
Posts: 4,031
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If it sounds to good to be true. It usually is.
I had a 83 MH with a 454 engine 3 speed transmission.
Added Banks exhaust to it. NO MPG gain.
Added a US Gear overdrive unit. NO MPG gain.
Traded it for a MH with ISB engine & 6 speed. Gained 4 MPG.
Added a K&N HD air filter to it. NO MPG gain.
But has saved $$$ not having to replace paper filter every 2 years.
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99 Discovery 34Q ISB
2014 MKS AWD EcoBoost Toad
Fulltime Since "99"
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03-14-2015, 06:35 AM
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#6
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Senior Member
Damon Owners Club
Join Date: Dec 2013
Location: GA
Posts: 196
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I run K&N air filters in all my cars and my Harley. Engines are nothing but big air pumps and the more air that moves through equals more horse power. I've never seen any gas mileage increase. I have a gas V10 and didn't even consider putting in a K&N filter since it does add more noise from the engine breathing in more air. Since your sitting on top of the engine that wouldn't be good at high RPM.
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2018 Winnebago Aspect 30J
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03-14-2015, 07:10 AM
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#7
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Senior Member
Winnebago Owners Club Freightliner Owners Club
Join Date: Mar 2007
Location: Home on the hill in Georgia
Posts: 2,742
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I you could get that kind of gain, wouldn't all cars come from the factory with them. The government is onto car companies about fuel efficiency all the time
Yes I tried one on my previous V-10 and didn't see any improvement in MPG
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Jerry Potter, Taz
1999 Coachman Catalina Sport
[SIGPIC][/SIGPIC]
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03-14-2015, 09:46 AM
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#8
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Senior Member
Join Date: Oct 2012
Location: Princeton, LA
Posts: 149
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Quote:
Originally Posted by Triker56
If it sounds to good to be true. It usually is.
But has saved $$$ not having to replace paper filter every 2 years.
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I agree with Triker56 on this.
I have a K&N filter in my MH and I don't get any better fuel mileage. The only way I save is, I take the filter out, clean it, put new oil on it and I don't have to buy new filters all the time. Other than that it is not worth the money.
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2008 Gulf Stream BT Cruiser
Wisdom is not a product of schooling, but of a lifelong attempt to acquire it.
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03-14-2015, 10:12 AM
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#9
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Senior Member
Outdoors RV Owners Club
Join Date: Oct 2014
Posts: 3,539
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Be very carefull with the amount of oil you use when re-oiling and the length of time you allow the oil to soak in and "dry". This has caused sensor failures in the intake system when oil mist is carried past MAF and throttle position sensors. I would not bother to put one on a new rig, they have already done what can be done to get cheap mileage increases so all you stand to gain is a problem. Better to spend a couple bucks every 20,000 miles.
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03-14-2015, 10:45 AM
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#10
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Senior Member
Join Date: Apr 2004
Posts: 3,797
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Back when we had an earlier Safari Trek with the GM 6.5 Diesel engine, a rep from Penninsular Diesel engines gave a presentation at a Safari convention Peninsular Engines | The Power You Need…Now. Penninsular is a major provider of 6.5 Diesels for the marine market.
Someone asked about K & N filters and the rep advised against using these. His story was that, even when properly oiled, their analysis showed an increase in Silica (basically fine sand) getting through the filter to the engine.
Having said that, I acknowledge there are always two sides to any story. I just offer this as information with no intent to start a flame war...
Quote:
Originally Posted by divingdoc
I have a 2013 Thor ACE with a V10 on a Ford Chassis. I have been told that a K&N filter will give me an extra 2-3 MPG is this true
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__________________
George Schweikle Lexington, KY
2005 Safari (Monaco)Trek 28RB2, Workhorse W20, 8.1, Allison 1000 5 spd, UltraPower engine & tranny, Track bars & sway bars, KONI FSD, FMCA 190830, Safari Int'l. chapter. 1999 Safari Trek 2830, 1995 Safari Trek 2430, 1983 Winnebago Chieftain, 1976 Midas Mini
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03-14-2015, 11:02 AM
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#11
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Senior Member
Workhorse Chassis Owner
Join Date: Jun 2003
Location: Palisade CO
Posts: 3,588
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Here are three web sites with filter info I have collected from threads over the years. They all indicate the K&N filters pass more silica than many others.
ONE
TWO
THREE
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Clay WA5NMR - Ex Snowbird - 1 year, Ex Full timer for 11 years - 2004 Winnebago Sightseer 35N Workhorse chassis. Honda Accord toad.
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03-14-2015, 11:23 AM
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#12
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"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 24,124
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I use to put K&N filters on everything when I was younger. Usually, the only thing they added was more noise because on many the housing was changed. Now that I'm older, wiser and have a little more money, I just change my filters more often and use quality ones.
Just my opinion, but I would NEVER install a rechargeable/cleanable filter on a diesel engine. These type of filters get their improved performance claims by passing more air, which equates to me.....more dirt, especially on a sensitive diesel engine.
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Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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03-14-2015, 11:38 AM
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#13
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Senior Member
Join Date: Nov 2014
Posts: 1,150
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Quote:
Originally Posted by Dutch Star Don
I use to put K&N filters on everything when I was younger. Usually, the only thing they added was more noise because on many the housing was changed. Now that I'm older, wiser and have a little more money, I just change my filters more often and use quality ones.
Just my opinion, but I would NEVER install a rechargeable/cleanable filter on a diesel engine. These type of filters get their improved performance claims by passing more air, which equates to me.....more dirt, especially on a sensitive diesel engine.
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I agree 100%. Air filters are designed to filter air and keep out dirt.. More air flow through a filter equals larger holes in filter thus more dirt that can get through. Dirt can kill your engine. Worth it to me to change the filter more often even if it costs more, it is much less than a rebuild or a new engine.
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03-14-2015, 02:11 PM
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#14
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Senior Member
Join Date: Jun 2012
Location: AB
Posts: 7,587
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Quote:
Originally Posted by Dutch Star Don
I use to put K&N filters on everything when I was younger. Usually, the only thing they added was more noise because on many the housing was changed. Now that I'm older, wiser and have a little more money, I just change my filters more often and use quality ones.
Just my opinion, but I would NEVER install a rechargeable/cleanable filter on a diesel engine. These type of filters get their improved performance claims by passing more air, which equates to me.....more dirt, especially on a sensitive diesel engine.
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Don, you are absolutely spot on.
The only way to improve on the OEM Ecolite Filters is to replace with a good Donaldson Canister Type Assembly but that Is a whole other topic.
In short "You can buy a lot of air filters for the price of one engine rebuild"
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2019 Unity LTV CB, pushed by a 2013 Honda CRV, BlueOx Baseplate, Aventa Bar & Patriot Brake
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