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Old 07-01-2021, 10:22 AM   #1
TXBRASS
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Default School me on diesel filters - what’s best?

Wanting to upgrade the filtration system for my Duramax. Is something like the FASS system the best for insuring clean diesel? Is there something else you’d recommend? I know very little about it.....

Teach me please.


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Old 07-01-2021, 10:27 AM   #2
hog_down
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What year Dmax? Some of the older trucks do not have a low pressure fuel pump, so the CP3 (high pressure fuel pump) sucks the fuel from the tank. Yes a FASS or AirDog filters the fuel a little bit better, and pressurizes it. They also make noise, depending on which model you get, just a heads up.
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Old 07-01-2021, 10:27 AM   #3
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Quote:
Originally Posted by hog_down View Post
What year Dmax? Some of the older trucks do not have a low pressure fuel pump, so the CP3 (high pressure fuel pump) sucks the fuel from the tank. Yes a FASS or AirDog filters the fuel a little bit better, and pressurizes it. They also make noise, depending on which model you get, just a heads up.

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Old 07-01-2021, 10:31 AM   #4
ladrones
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I would just get a Cat filter conversion with filter/water separator set. They make kits or you can DIY.
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Old 07-01-2021, 10:34 AM   #5
dclifton
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Quote:
Originally Posted by ladrones View Post
I would just get a Cat filter conversion with filter/water separator set. They make kits or you can DIY.
This i think you can buy the adapter pretty cheap from XDP or somebody like that.

And then you can cross the cat filter to a Napa, Baldwin or Donaldson filter. Was going to do this to my 09 if the primer pump gives me trouble again.
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Old 07-01-2021, 11:51 AM   #6
Pushbutton2
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My buddy has the FASS on his Duramax.
Don't know if he mounted it or not. But it's outside of the frame rail under the bed and I can see the filter hanging under the vehicle.
I can also hear it running. It's louder than the truck @ idle....

Last edited by Pushbutton2; 07-01-2021 at 11:54 AM.
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