Lets put a rumor to rest.

gren71 · **Posted:** Wed Dec 28, 2011 8:59 pm

So over the past year or so ive noticed an ebb and flow among forums/threads/and members intel regarding many things. Almost like a fad or a flavor of the month, information is thrown at every one and then reneged on a time later.

Id like to at least attempt to put one rumor to rest.

K&N drop in air filter v/s OEM filter.

Variables:
mileage on jeep
travel distance
travel time
speed
route
temperature
weather conditions
fuel station
season blend
equipment in jeep(weight of vic)

Most of the variables i listed i can account for..

Mileage on jeep:
JUST changed oil so shouldn't make a huge difference

Travel Distance/Speed/time/route:
All four are eliminated by only accounting for the data from the same stretch of highway i travel every day on the way to work. I can account for data on a 35 mile stretch, at the same time, at the same speed (I use my cruise control), same terrain being its a federal highway,and considering its the same route/speed/and distance, it will be a consistent time.

Temp/Weather:
I will watch the weather and try and choose the week with the most consistent temp/weather conditions for the testing.

Fuel Station/Season blend:
I will only fill up at the same fuel station. I Will use a fuel station that a friend owns and will time the test for when he gets the tanks filled so i know its a semi consistent blend of fuel.

Equipment/Weight:
well I wont be gaining any weight any time soon and i wont load any thing other than basics for work in the jeep so as not to affect the over all weight. There is also the gear I have on the jeep now, which will affect the mpg. But being i will be running the test with the exact same equipment the entire time the difference, if there is any, should still be evident or at least noticeable.
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I thought of all this while i was on the way home from the gym so im sure i am over looking something..help me refine this a bit before i attempt to put the rumor to bed about air filters.

Cheers :JEEPIN:

bunkermonkeycw · **Posted:** Wed Dec 28, 2011 10:42 pm

No offense (LOL) but maybe your current weight (the jeeps) may be interesting as it tends to effect all of the above. Plus it would be useful if another was to do the same test... Good luck, definitely interested!

tommudd · **Posted:** Wed Dec 28, 2011 11:21 pm

Should be interesting
see if its different than mine after over 20,000 on the K&N ( finally wised up and threw it out) and finally to stock box and Amsoil
carry on

gren71 · **Posted:** Thu Dec 29, 2011 8:11 am

bunkermonkeycw wrote:

No offense (LOL) but maybe your current weight (the jeeps) may be interesting as it tends to effect all of the above. Plus it would be useful if another was to do the same test... Good luck, definitely interested!

Ill look around and see if there is some where i can find a weigh station willing to let me weight the jeep with me in it haha

bunkermonkeycw · **Posted:** Thu Dec 29, 2011 8:16 am

gren71 wrote:

bunkermonkeycw wrote:

No offense (LOL) but maybe your current weight (the jeeps) may be interesting as it tends to effect all of the above. Plus it would be useful if another was to do the same test... Good luck, definitely interested!

Ill look around and see if there is some where i can find a weigh station willing to let me weight the jeep with me in it haha

Waste Management (the dump round here) can weigh you also

Diggerfreek · **Posted:** Thu Dec 29, 2011 1:01 pm

******My own opinion******

Now my KK weights in at 5K which is probably the fattest one on here (KK wise)

I have run both the OEM and the AEM brute force intake.

In my many many miles, it is my opinion that:

1. The OEM intake will offer the best fuel economy
2. The AEM offered the best throttle response and a noticeable difference in HP/Torque

The biggest factor I believe in fuel mileage was intake air temp.

The OEM intake runs on average 2 to 5 degrees hotter then the out side air temp. When the intake becomes heat soaked, it runs 10 to 15 degrees hotter

The AEM intake runs on average 10 to 15 degrees hotter then the out side air temp when the intake is not heat soaked. When the intake becomes heat soaked, it runs 20 to 35 degrees hotter.

Now I could have wrapped my intake in exhaust heat tape, but I could never justify the cost.

*On a funny little not, the refresh rate of the IAT sensor is way faster then the air temp sensor that is used for the display in your dash. Using my scan gauge, I can tell 10 to 20 seconds before my dash updates if the temp changes by looking at the IAT sensor reading..

ATXKJ · **Posted:** Thu Dec 29, 2011 9:01 pm

Also depends on how long you want the engine to last....

(note: that's the old style Amsoil filter - they made it better since then)
http://www.dieselbombers.com/chevrolet-diesel-tech-articles/16611-duramax-air-filter-testing.html

Hey - this one looked interesting too
http://www.fueleconomy.gov/feg/pdfs/air_filter_effects_02_26_2009.pdf

gren71 · **Posted:** Mon Jan 09, 2012 10:14 am

Fram Standard Air Filter
Tank 1 - 15.6mpg
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I wasnt able to find some where to weigh the Jeep, But I'm sure the minor difference in weight wont make a huge difference.

More to come!

gren71 · **Posted:** Thu Jan 12, 2012 9:33 am

Tank #2 15.83

I've been reading that how close the Vic is to an oil change may have an affect. So I'm goin to work out a formula (of sorts) to represent oil life and list I with the mpg. I'm close to a change change now so by the time I get my third tank data I'll get the fluid change.

Should be interesting to see the last three tanks of an oil life span as compared to th first three.

Then I'll do similarly with a fresh K&N.

gren71 · **Posted:** Tue Jan 24, 2012 9:27 am

15.6mpg @%10 oil life

Here is the formula for iol life.

Every 3,000 miles i get a change so we will say 3,000 miles is %100 oil life
So with that if i have traveled 1,500 miles i will have %50 oil life left.

I have 300 miles left so im currently at %10 oil life left

Once i change oil ill do another three tanks with OEM filter to compare MPG with oil life as a factor.

Lets put a rumor to rest.

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