6.7L OneTon

I just bought a new Fleetguard the other day from the Cummins dealer in Vegas. It fit just fine but was about 1/3 of the thickness of the original filter and also had a thin lay of foam prefilter on it. I'm driving 260 miles tomorrow so I'll see how the mileage is. I also just got the AX flash.

Cuminapart

Well , you guys intrigue me. So I picked up a new Fram(ughh) for a 07 5.9 from Newfie Speed and Sport , and threw it in to see(cheap test material). Its -30 around here these days so I haven't seen maybe 1 MPG difference, so far. Only drove 80Km though, at 110KPH. Overhead shows 1 mpg gain so far.

gsbrockman

As soon as someone :

• Replaces their dirty OEM 6.7L filter with a New OEM 6.7L filter
• Then, after two tanks of fuel, replaces the "new" 6.7L filter with a 5.9L filter
• Records & documents everything with both filters and four tanks

..........then I'll maybe "bite".

Greg

myfirsttruck

Done it! I'm running 1500 miles a week so running through a "few" tanks is no big deal

westexhunt

Severe blowby and oil consumption, piston rings eaten up by dirt, intercooler with several pounds of dust/dirt in the bottom.

Strjock81

Maybe if I put a 12v filter in my 04.5 I could increase my mileage by 25%?

Cuminapart

Why stop there , try a VW golf diesel filter, should be good for 120% gain!

come on , I know someone here can "one up" me on this one! Today on the way in to work, overhead read 15.7 l/ 100 KM. Normally at 18.2 l/100KM. I havent hand calc'ed this though. as ambient temps are -13 today , not sure how this fits into the equation. Idling/ warm up time greatly effects this avg. as I've seen. Less warm up/ less creep on the overhead display. I'll let you know how it avgs throughout the week.

Cuminapart

Are you sure your from Kentucky? , You sound like you spent some time in Missouri! If your skeptical , a $30.00 filter is what it will cost you ,and you can test any way you like. I don't know if I believe it either but I'll try anything that gets me some safe gain in MPG. I would have tried the dreaded K&N if they had it in stock, but unfortunately, no dice.

SOhappy

Those paper Fleetguards with the foam stuck to them returned horrible MPGs and high EGTs for me. I bought a couple from Geno's and wished I could've sent them back. The Napa Gold (Wix) performed much better before I got the S&B intake.


Exactly what I was thinking, I always see a 1.5-2.5 mpg jump when I replace/clean an air filter, then the mpg gain vanishes after a tank or two as the thing loads up with dirt. Replacing the fuel filter can have a similar effect.

HOHN

My mileage hasn't gone down any since I installed the 1000CFM prototype PowerCore MegaBHAF from Donaldson a couple years ago.

All I have to do is "clean" it periodically by flipping it over, rapping it on the concrete a few times, and shaking the dirt out.

This unit filters BETTER than a BHAF (Powercore nanofiber media) and flows about double

I still think i can do better...

jkitterman

You are about at the top of the filtering food chain there. The Cummins Filtration OptiAir 1300 flows 1171 cfm @ 12 in H2O and their AH19080 flows 1106 @ 10 That is out of their brochure pg 5-31 and 5-75

6.7L OneTon

Good to know about the Fleetguards...oh, and I saw no increase in mileage, in fact, it was down about 1 mpg from what I normally see on that route. Perhaps a wix is in order. Very few people actually make a "6.7" air filter...I've only been able to find a Fram, (in the catalog, not in the store), the Fleetguard, and the dodge from the dealer.

jkitterman

When I checked Wix online, it showed the part number in italics and said it was to be announced and was not available currently. This was just this past week.

coolbreeze

Does Cummins/Fleetguard make the OEM air filter? I know they build the OEM oil and fuel filters.

Cuminapart

Still watching , not much change difference is maybe 2mpg , but I think I'm
prolly driving it like Granny cause I'm watching it more than usual... I'd like to hear if theres any difference with an AFE though...