re: DEF in fuel tank

DEF in the fuel is worse than water. It has all the horrible side effects of water with the added benefit of being corrosive as hell. Its some nasty shite.

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The cost from the stealership? $22K for labor, parts, engine and fuel system.

Certainly this can't be. Is there a diesel mechanic shop that they should be looking at instead? The company is located in Baton Rouge.

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I can tell you that regional trucking company in Mississippi recently had a dumb arse driver do this to one of their rigs. It was over 100k in damages.

metal shavings in an engine's oil is a sign of severe failure in the compression chambers of your engine."

Metal shavings in the oil is more likely to be rod or main bearing material. It would be more difficult to get the metal shavings from the compression chamber to the oil. If metal shavings were in the compression chamber they would get stuck onto the head of the piston, stuck on a valve top, or get blown out of exhaust valve and into exhaust-all unlikely scenarios.

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I know of someone who out Gas in their Diesel or the other way around and realized. Where they really Fd up was starting it to move it to a parking spot. Insurance covered it pretty sure.

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Diesel nozzles are wider than gasoline so it’s usually hard to accidentally put diesel into a gasoline vehicle. DEF nozzles are smaller than both so able to put into a diesel filler neck. If the error is caught before the vehicle is started, it’s just the cost of draining the tank.

That thing will never run the same even if you fixed, and puts it at a higher risk of engine trouble, which transportation is vital relating to business.

Take the loss now and benefit over the long run. Buy a new vehicle.

DEF!

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- DEF in the fuel system caused the fuel to not combust, and since DEF will not compress it caused damage to the combustion chamber causing the loss of compression.

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Since DEF is water and urea, I could see that. But it seems odd that it could build up to the point of replacing so much volume to cause damage. Wouldn't the engine just die, since it wasn't firing?

I suppose one or two cylinders could get 'flooded', before the others. And those cylinders would continue to build up water since they weren't firing, and the other cylinders continue to fire, until those flooded cylinders hit a destructive level? If you flooded even half the volume of the TDC volume that could double the pressure on the piston/rings/rod/crank.

The TDC volume would be ~ 1/18th the displacement volume for an 18:1 ratio diesel, so ~ 1/3 Liter, or ~ 56 mL per in a 6 cylinder engine, ~ 1/4 cup. I guess that's how it could do a lot of serious damage?

Geez, but now that I think of it, a 1/4 Cup per cylinder? The fuel injector only shoots a tiny bit each cycle. And that DEF would be a small % of the total fuel. I dunno. Even it it was half DEF, it would take a 1/2 cup per cyl, so 3 cups for a 6-cyl, that's ~ .2 gallons of fuel. A diesel would run for a while at idle/low speed to consume 0.2G. Still seems like it would just die.

I’m not sure about the effect on the engine cylinders, but the high pressure fuel pump is lubricated by the diesel itself on cp4 pumps. If the diesel is contaminated by water, it’ll corrode the internals until it starts throwing glitter to the injectors and requires the entire fuel system to be replaced.

Yea, I suppose the injectors could be the first to go, and throw metal into the cylinders, messing up rings and everything.

But the OP did mention the non-compressible fluid, b ut maybe that was a guess?

I filled a diesel F250 once with Super Unleaded. Ran a hundred miles at 80 mph. Stopped in SeguinTexas and the fuel pump failed when I stopped. Drained the tank ,found a local who rebuilt my pump and 350.00 (true number) later I was rolling. Ran the truck for another 75,000 miles without a problem. Traded it.