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Old 08-20-2014, 01:17 PM

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Another fuel filter thread

I'd like to add additional fuel filters and have seen plenty of discussions on it, so I thought I'd ask about my specific plan, which I think is fairly simple. I'd like to add both a Wix 33405/BF1212 10 micron as well as a 33528/BF7633 2 micron filter and use the stock HFCM. The end goal is long-term filter intervals on the stock fuel filters.

I've seen warnings about running the 2 micron filters pre-pump, but I've also seen threads like where both filters are pre-pump and it works just fine.

What is the consensus on filter placement relative to the stock pump? If I end up using a filter post-pump, will hose barbs and clamps be sufficient for the hoses, or do I need to flare or add fittings?

Also, what kind of filter change intervals on the stockers should be used with the additional filters in place?

On edit, the truck gets about 15k miles/year.

Last edited by bigric; 08-20-2014 at 02:57 PM.
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Old 08-20-2014, 02:24 PM


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AirDog 100 user here. No issues with my setup running filters "prepump". My service intervals were to drain the water separators at every oil change. I would change the AD100 filter twice a year and the OEM filters once a year.

Say April I change the AD filter, then in July the OEM filters, then as it got colder say no later than October/November the AD filter. Repeat. This was not some rigid schedule, I would do this as I could.
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