3rd Gen Engine and Drivetrain -> 2003-2007 5.9 liter Engine and drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

mixing gas with diesel

Old Jan 26, 2012 | 08:16 PM
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mixing gas with diesel

Had this cat at work telling me how he is mixing gas with diesel to off set the cost of fuel. He is putting in 10 gal of gas and 20 gal of diesel. Said the truck runs better than ever. Is there any issues with doing this, or is this cat asking for trouble?
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Old Jan 26, 2012 | 08:19 PM
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Don't even try it on your common rail. All your doing is asking for a major headache. Gas will dry everything out, and pretty soon, it's a $7000 bill replacing pumps and injectors.

He's probably got an old Ford or Chevy diesel.
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Old Jan 26, 2012 | 08:32 PM
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your right 06ram2500. He has a 2005 ford
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Old Jan 26, 2012 | 08:52 PM
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How long has he been doing this? I wouldn't let him know not to do it. See how long before he has to replace some parts, or the engine.
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Old Jan 26, 2012 | 09:21 PM
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Maybe he's really running an old M35A1/A2 with a multifuel engine? I'd love to know his EGT but I'm not sure the pyro probe would last long enough to get the reading to the gauge
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Old Jan 26, 2012 | 11:27 PM
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I thought the fuels would end up separating ..... which would cause him even more problems.

You can lead a horse to water, but you can't make him drink.




-Kris
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Old Jan 27, 2012 | 02:22 AM
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With 33% of his fuel being gas he's asking for trouble, just don't do it. For 2005 Ford had the 6.0, it was an ok engine if you didn't ask too much of it. At any rate it's injection system won't tolerate that much gas any better than your injection system will.

Not to mention the fact that the BTU value of gas is lower than diesel.

Even if it were an old 6.9 Ford or a 6.5, 6.2 or even 5.7 GM diesel I wouldn't consider running this! Most of those run a fuel lubricated pump and would be damaged very quickly.

Sometimes folks like this say things just to hear themselves talk! Hope hes not being mean and trying to sabotage you!
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Old Jan 27, 2012 | 07:22 PM
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i knew this did not sound right. He's not the brightest bulb in the pack.
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Old Jan 28, 2012 | 12:34 AM
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some diesel engines you can mix gas but its a very small ratio, 5% maybe (older mercedes and VW's have this written in the owners manual) I have run military vehs mixed with gas, but it was in winter conditions/on a UN mission and it was done because of the poor quality of the fuel, I had a MLVW (8.2 detroit) that used to get a gallon or so of napta to a tank to "thin out" the diesel, I would not do this in a modern CRD engine
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