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Old 11-19-2012, 03:19 PM   eBay Motors  #11 (permalink)
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I use the cat filter and let my airdog collect the water.
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Old 11-19-2012, 03:41 PM   eBay Motors  #12 (permalink)
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cat 1r-0750 is a 2 micron filter and water seperator. but a Fleetguard fs1212 is a better w/s, but it has to be on vacumm to work right meaning not after a lift pump
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Old 11-19-2012, 03:58 PM   eBay Motors  #13 (permalink)
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You'll be fine running the cat filter there built to separate the water I wouldn't worry about it just change the filter at 6 to 8000 miles.
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Old 11-20-2012, 03:33 AM   eBay Motors  #14 (permalink)
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Thanks for all the responses. It sounds like I will be better off with the CAT filter alone than with the factory filter. I have yet to see the "water in fuel" light come on anyway, on either of the dmaxes I've owned, so it's worth it for me to switch.
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Old 11-20-2012, 06:39 AM   eBay Motors  #15 (permalink)
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Yeah honestly IMO Cat wouldn't warranty a fuel system on their engines, with a filter that wasn't designed to separate water. I mean, on a job site, transfer tank to transfer tank (shipping to jobsite) I would expect water to be pretty common to get in fuel tanks.


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Old 11-20-2012, 06:41 AM   eBay Motors  #16 (permalink)
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Quote:
Originally Posted by takeem View Post
yeah honestly imo cat wouldn't warranty a fuel system on their engines, with a filter that wasn't designed to separate water. I mean, on a job site, transfer tank to transfer tank (shipping to jobsite) i would expect water to be pretty common to get in fuel tanks.


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x2.
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Old 11-20-2012, 09:21 AM   eBay Motors  #17 (permalink)
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Technically speaking, Cat does not market the 1R-0750 as a water separator and because of that, they call it a secondary filter. They recommend a water separator as a primary filter. But that does not mean you can't just run the 1R-0750 and be perfectly fine....plenty of people are doing that without problems. Cat would just not recommend it.

For the sake of peace of mind and sanity, I'd run a Donaldson water separator with the clear bowl if that is to be your primary filter.
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Old 11-26-2012, 07:14 AM   eBay Motors  #18 (permalink)
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If you dont already know the factory fuel filter and water seperator are so inefficent most people would crap their pants if they knew what was getting through it, 60% at 6 microns vs 98% at 2 microns with the CAT. Im running the CAT 1r-0750 standalone and have no worries about not having the GM "Water Seperator"
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Old 11-27-2012, 08:41 AM   eBay Motors  #19 (permalink)
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Quote:
Originally Posted by 07LBZ6.6 View Post
If you dont already know the factory fuel filter and water seperator are so inefficent most people would crap their pants if they knew what was getting through it, 60% at 6 microns vs 98% at 2 microns with the CAT. Im running the CAT 1r-0750 standalone and have no worries about not having the GM "Water Seperator"
X2.


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Old 11-27-2012, 08:50 AM   eBay Motors  #20 (permalink)
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Thats cool. I'm pretty much sold on the CAT adapter, but just one more question.... When you pull the filter off to change it, what keeps the adapter from coming off as well?
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