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Old 09-24-2020, 08:34 AM   #1
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Maintenance-Water Separator

I have the Cummings diesel and the separator is easy enough to get to. I typically just look at it with a flashlight to see if there is an oil/water separation and have not seen any signs of water. Does anyone just remove say a half cup or something just to be safe? Or just leave it alone? I'm a 2019 with 15k miles and regular service is done so they may drain it. Liked my boat better as it used red-off road use diesel and was easier to see the separation.
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Old 09-24-2020, 10:24 AM   #2
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I usually drain a couple tablespoons into a clear plastic baggie a couple times a year so I can get a really good look at it. Other than that nothing.
Brian, Loretta & Daisy (Golden Retriever)
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Old 09-24-2020, 10:29 AM   #3
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If no water/diesel interface line and no dirt, you are good to go. Opening the drain tells you nothing additional.

Be sure to use the right micron rated filter(S).

If just one fuel filter (the water separator/fuel filter) the micron rating must meet the specs for your engine-- generally 2-5 microns.

If you have both a primary (water separator/filter) AND a secondary fuel filter, then the primary needs to be between 10-30 micron and the secondary the correct spec for your engine.
Brett Wolfe
Ex: 2003 Alpine 38FDDS. Ex: 1997 Safari Sahara. Ex: 1993 Foretravel U240
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maintenance, water

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