Duramax Diesels Forum Truck of the Week
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Old 05-24-2019, 05:59 AM
briencolgan briencolgan is offline
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Default Home heating oil gaff

I did something brilliant with my 03 duramax. I came across 300 gallons of free diesel in a metal tank. And I put it all in the truck . And things were good until the last 40 gallon fill.

I watched the fuel turn black going in and thought to myself this is a bad idea. And predictably Iím chewing through filters every 50 miles.

Iím probably on filter 6. (I get just over 200 miles per fill up) I was figuring eventually after enough filters, the problem would go away. On this particular truck dropping tanks is doable but a pita due to an aftermarket box thatís welded on.

Am I gonna have to just suck it up and remove the tanks or do you think after enough filter changes the sludge in the tank will be eliminated.

Iíd rather spend another couple hundred on filters versus dropping the tanks.


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Old 05-24-2019, 06:37 AM
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I’d wait until it needs a pump and injectors
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Old 05-24-2019, 06:53 AM
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Moved to Fluids and Maintenance, b/c after using that fluid, you're going to be doing a lot of maintenance....
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Old 05-24-2019, 07:22 AM
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Quote:
Originally Posted by briencolgan View Post
I watched the fuel turn black going in and thought to myself this is a bad idea. And predictably Iím chewing through filters every 50 miles.
Even after seeing it turn black you kept going? And after the first filter change at 50 miles you still kept going?? Free "fuel" is not free if you cause thousands in damage...
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Old 05-24-2019, 08:10 AM
briencolgan briencolgan is offline
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I figure the filter is doing its job. Thatís why. Am I missing something? Can impurities get past the filter?


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Old 05-24-2019, 09:32 AM
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Quote:
Originally Posted by briencolgan View Post
I figure the filter is doing its job. Thatís why. Am I missing something? Can impurities get past the filter?


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No fuel filters catch everything...
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Old 05-24-2019, 09:43 AM
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Quote:
Originally Posted by Burn Down View Post
No fuel filters catch everything...
When do you think I should change mine? Or does mine even have one?
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Old 05-24-2019, 10:50 AM
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Filters catch a percentage of particles based on their micron rating and efficiency. So some will get past the filter. How much? Depends on the filters you are running. The more junk in the fuel the more will make it to the pump and injectors

I would drop the tank and clean it out fast. LB7s are the least tolerant of bad fuel. You can trash a good set of injectors in a few miles like that
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Old 05-24-2019, 11:14 AM
briencolgan briencolgan is offline
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Thanks 2004LB7. Thatís what I was looking for. I appreciate it.


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Old 05-24-2019, 01:12 PM
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Quote:
Originally Posted by Burn Down View Post
Iíd wait until it needs a pump and injectors
waiting for the white smoke thread
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