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Old 01-14-2017, 04:13 PM   #1
"Formerly Diplomat Don"
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Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
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Disected Air CLeaner

I know air cleaner life is often discussed with varying opinions. I decided to dissect my air cleaner so I/We could see how dirty it was after 18 months and 15K miles. My coach uses the Parker Racor Ecolite sealed air cleaner. This is hardly scientific, but is a good depiction of a sealed air cleaner.

I will say up front that I like to change my air cleaner frequently, which is a personal choice and I'm not advocating that you do as I do. This air cleaner saw half of it's life in California and the other half on a coast to coast trip. There was a combination of dusty conditions and rain.

This is a photo of my Filter Minder before the change.

Cutting this thing in half proved to be tough. As I disassembled it, the following photo is about 2/3rds of what came out of the air cleaner (dirty side). Not really an unexpected amount.

Lastly, here is a photo of the element cut in half. This air cleaner design flows the air from the inside to the outside. Keep in mind, the filter, when new, is bright white. It was fairly dirty between the pleats (hard to photograph).

The instructions and warranty within the air cleaner box stated that the filter should be changed every 12 months or when the filter minder reaches 20-25.

I would admit that this air cleaner is still in pretty good shape and could go at least another 5K - 10K, which would be two years for me.

As I said, this was not put out to cause a debate, but to give everyone an idea what these filters look like at 15K miles.

Side Note:.....I use to buy the elements for the Donaldson filter on my Monaco a year in advance and keep them stored in the garage. The paperwork that came with the above filter states that no filter should be used if it has exceeded the three year shelf life. For me, that means no more buying these things in advance. Buy them when you actually need them.
Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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Old 01-14-2017, 09:20 PM   #2
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Great info, thanks for sharing! 😜👍🏻

1996 Country Coach Intrigue 😜
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Old 01-14-2017, 09:46 PM   #3
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i changed mine last turns out it was original, and not the replacement i was assured was changed waaay back. anyway, it was vintage 2008 and i changed it for a new one in 2016, pictures below, it was not what i would consider dirty or damaged in anyway.

i think 12 months change out is excessive for my usage and driving.
i imagine in other areas of the country it may not be as good
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Old 01-14-2017, 11:25 PM   #4
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How did you cut that baby in half?

I too bought a couple air filters in advance and was thinking that maybe I should buy a new fresh one for my next change instead of one that's been in my garage for a couple years.
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
Never blame someone else for the road you're on.
That's your own asphalt.
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Old 01-15-2017, 09:10 AM   #5
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15 Discovery 40E

I just inspected mine at 15k miles. It was very clean inside. Found a paper towel from inside from Fleetwood factory....
Carefully shop vac'd it out, very little dust.
Buy the way, I did a water drop test in one spot. The drop evaporated before it soaked into the waxy paper. No more worries in heavy rain.
Full Timers.
2015 Fleetwood Discovery 40E on a Freightliner XCS chassis with a Cummins ISL9 pulling 1 and/or 2 motorcycles, '07 Honda Accord OR a 17' Runabout Boat.
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Old 01-15-2017, 02:07 PM   #6
"Formerly Diplomat Don"
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I use a angle grinder to cut off the metal skin and then a Skill Saw to cut the material. After inspection, I found that it was probably more water resistant than I expected.

I initially tried to cut the filter medium with a razor knife, but it was very difficult to cut. Lots of nylon/plastic structure.
Don & Mary
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Old 01-15-2017, 02:24 PM   #7
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Great post Don, very informative, thanks. BTW, Chevy finally has my Colorado dialed in.
Chuck in SW FL
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