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Lifetime Filter, No Mileage Restrictions, Increase Horsepower, Increase Fuel Mileage, Lowers Exhaust Temps, Lowers Operating Cost

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average mileage increase for install

What is the average mileage increase to install a fleet air filter single element to a Kenworth T-660 series truck?

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I have a Vnl 780. After I installed one I can prove 4/10. I got one for my uncle in his international 9400. He believes 2/10 to his set up. I just spoke to friend he's reporting 3/10 on his Vnl 670.

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I gained 2 tenths on my 02 pete 379 with duel vortex air cleaners. I've heard better numbers on trucks with single under the hood filters.

Just to throw out some numbers, I changed to Fleet Air Filters 200,000 miles ago. At $3.50 a gallon and from 6.8 to 7 mpg that is 1.5 cents per mile savings, 200,000 X .015 = $3,000. I've saved in fuel.

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And, you have not had to buy 4 paper filters at $50-$75 each saving you even more money.

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By chance what part number would I need to look up for fleet air filters for my 2002 Pete with dual vortex

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Gregory I wouldn't spend the money. I did spend the money for one and seen no improvement what so ever plus I've found I have a higher silicon count in the oil than with OEM filter so I went back to OEM filter

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I bought the Fleet Air Filter at MATS last year (2011) and installed it in parking lot to immediately feel the throttle response and picked up 4/10ths on my dedicated runs that even took it out for 3 runs with the old paper filter to prove the 4/10ths gain was lost with the paper filter.

Highly recommend Fleet Air Filter with Aero trucks with under hood filter box and especially the 500+ HP trucks that need more air.

We spend all that money on free flowing exhaust mufflers, manifolds and larger turbos along with ECM reprograms for more power/fuel mileage, but do nothing to improve air intake. Fleet Air Filters help solve that problem.

If you improve the exhaust flow, don't forget to improve the air intake too.

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I installed the fleet air filter in November of 2010 so since I put it on in winter I don't know if it increased my fuel mileage. I can tell you though that it increased my boost therefore increasing horsepower. Bruce from Pittsburgh power says for every 1 lb of boost you increase horsepower 15 to 20 so being conservative I increased 3 to 4 lbs of boost so that translates to 45 to 60 HP if you figure at 15 HP per lb of boost. Also not long after I installed it I got algae and didn't find that out until Dec 2011. Now since my algae is gone my fuel mileage has come up. My 30 day is 8.3 which is up 7/10th from my average of 7.6. I also installed the FASS so some of the fuel mileage had to come from that too.

Fleet air filter said most of the trucks like mine increased 4/10ths but since my fuel mileage was already high I should at least see 2/10ths. I have an FLD 120 with a Detroit.

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The average across the board for all of our filters is between 2 to 4/10ths. Typically the single under the hood filters pick up more because of air flow restriction, the dual filters that already get a lot of air pick up anywhere from 2 to 3/10ths.

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What do you mean by "improve the air intake too?"

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@justinshea We are working hard to try to get that filter out. We know it is a really popular truck. The design of the filter is the issue in how they made it. We just want to make sure we can get the same out of that filter that we get out of all of our filters.

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I have had mine on a '04 columbia mercedes. I picked up .4 mpg from week one. set up with 12 speed/ auto tranny(336 rears) and have an increase in HP also. at least a full gear.

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Ive been hounding fleet air filters for months on the filter for the T660 but they have not gotten one ready yet or has that changed?

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That hasn't changed yet, but hopefully soon.

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I've been on the fence about these filters for a while. With only 5" of restriction with dual paper filters in my Western Star, would fleet air filters still improve performance and MPG?

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@Chris Short answer is YES. You should still see the average fuel mileage increase for our filters and the increase in performance.

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I would have like to of seen the long answer on Chris's question instead of the simple short one. These filters for guys with duel breathers are expensive. My W900 has 4" of restriction on a hard pull, no soot in oil sample to indicate lack of air flow and no silicone to indicate dirty air so where will the savings come from? My paper filters are a year old with 140000 miles on them and I make two off road delivers into a very dusty landfill a day.

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You would still get 2 to 3/10ths and it will continue to filter better than a paper filter will.

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Everyone is leaving out the fact that you don't have to buy paper filters anymore, the one for my truck is $50 and I changed it every 3-4 months, my fleet air filter is paying for itself.

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That is true, some are paying even more for their style filters.

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I am looking forward to buying one for my T660. It was going to be my next purchase, hopefully it will be out soon.

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Still in the beginning stages of planning for it. A whole new housing and filter will have to be made for the T660s

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I just got my fleet air filter and installed it today. I haul trash, dedicated run, 2 trips a day for 410 miles a day. Most loads are between 70k and 80k. My set up is a freightliner Columbia day cab with a Detroit 12.7 L 455hp engine and 3:55 rears. I drive 55mph on the freeway, and 1/4 of my miles are in the city ( about 50 total stop lights in a day). My trailers are open topped and I'm empty half of the day. I had been averaging 6mpg 68 gallons per day. Today on fill up it only took 59 gallons 7.1 mpg! Needless to say i was estatic! I have no other mods on the truck I know it was only one day but I'll be more than happy to keep everyone in the loop!

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another 410 miles today, and only 60 gallons. 6.8 mpg!

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Anyone with a Volvo D12 engine try this I heard somewhere else that they hurt the D12 and it acutally makes them lose mpg.

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makes them lose some mpg when the guys romp on the throttle...that's what i did :)

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Absolutely nothing in mpg. However you can really hear the turbo whistle now and I guess I can wash it and not have to buy another one. I paid $3000 parts and labor for a cab foil and $3000 for a bullydog and no increase in mpg. The bullydog really brought the truck to life and I can monitor how others drive for me but no real payback. I think this is all hog wash or the same snake oil they have sold for years.

David I.H. Branded

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Quinten Brune will be eternally grateful.
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