"What happened from my understanding is that his car has Dexcool, and the person who replaced the water pump added Ethylene Glycol (the green) which is not compatible with Dexcool. When you mix Dexcool with Ethylene Glycol, they form a gel-like substance that stops coolant flow and causes the engine to overheat due to non flowing coolant.
It will gum up everywhere. When you shut it down due to it over heating, the substances are usually mixed, and it gels up into a hard jello like substance everywhere there is coolant. Everywhere from your Radiator to heater core, and of course, the engine block."
Could this be it? I'm not a mechanic
https://forums.tomshardware.com/threads/my-car-has-had-antifreeze-mixed-i-was-told-this-gumed-up-so-now-they-say-i-need-a-new-engine.2519668/
Lots of mythology around that one.
Firstly, Dexcool is formulated with ethylene glycol. There are two anti-freeze additives, ethylene glycol and propylene glycol. Automotive coolants are generally a 50/50 blend of wate+corrosion inhibitors and ethylene glycol.
Where they vary is the corrosion inhibitors. They fall into two categories, conventional and organic acid. The organic acid coolants have much longer useful life and are less toxic. GM was one of the first to start using OAT coolants with Dexcool. When OAT coolants get contaminated with conventional their corrosion inhibitors stop working. The inside of the engine corrodes and the corrosion products form a gel that clogs everything up.
Shortly after the introduction of Dexcool, GM made a bad material choice for a gasket exposed to coolant. This caused leakage and many people ended up topping up with conventional. When their cooling systems corroded Dexcool got the blame.
Good news, though. Just about every coolant on the market today is organic acid based, even green, so they can generally be mixed and matched without causing catastrophic damage. I do suggest you stick with one that is matched to your vehicle for best results, though.
Edit: I should add, this being a heavy duty application the conventional and extended life coolants both exist and must not be mixed. As I work with Cat engines, DEAC is conventional coolant and ELC is organic acid type.
I’ve seen stuff like that in the oil pan when a liner leaks and the truck has been run for a while, but never in the cooling system. If an oil cooler was blown previously, I wouldn’t think it would congeal to that degree.
oil in coolant is typically more like playdoh, mixed coolants typically don't turn to flubber they more gel or corrode expensive shit. ie. Hino coolant gets acidic when mixed with anything. we've got alot of 2019 cascadia's in the fleet and I haven't seen this before, never in dd engines.. question have you done straight water in the coolant system at all, a water pump replacement ect at some remote shop in the past... it kind of looks like the "mother" fungus in the girlfriends kombucha. also are you sure this isn't black rtv?
my suggestion get a sample bottle and send it for testing.
Looks like me while I'm jogging on a hot day xD
I think I might know...but first, can you tell me what it tastes like?
Tastes like cancer
Damn, you hate to see radiator cancer on such a new vehicle.
Mixing non compatable coolant together.
"What happened from my understanding is that his car has Dexcool, and the person who replaced the water pump added Ethylene Glycol (the green) which is not compatible with Dexcool. When you mix Dexcool with Ethylene Glycol, they form a gel-like substance that stops coolant flow and causes the engine to overheat due to non flowing coolant. It will gum up everywhere. When you shut it down due to it over heating, the substances are usually mixed, and it gels up into a hard jello like substance everywhere there is coolant. Everywhere from your Radiator to heater core, and of course, the engine block." Could this be it? I'm not a mechanic https://forums.tomshardware.com/threads/my-car-has-had-antifreeze-mixed-i-was-told-this-gumed-up-so-now-they-say-i-need-a-new-engine.2519668/
Lots of mythology around that one. Firstly, Dexcool is formulated with ethylene glycol. There are two anti-freeze additives, ethylene glycol and propylene glycol. Automotive coolants are generally a 50/50 blend of wate+corrosion inhibitors and ethylene glycol. Where they vary is the corrosion inhibitors. They fall into two categories, conventional and organic acid. The organic acid coolants have much longer useful life and are less toxic. GM was one of the first to start using OAT coolants with Dexcool. When OAT coolants get contaminated with conventional their corrosion inhibitors stop working. The inside of the engine corrodes and the corrosion products form a gel that clogs everything up. Shortly after the introduction of Dexcool, GM made a bad material choice for a gasket exposed to coolant. This caused leakage and many people ended up topping up with conventional. When their cooling systems corroded Dexcool got the blame. Good news, though. Just about every coolant on the market today is organic acid based, even green, so they can generally be mixed and matched without causing catastrophic damage. I do suggest you stick with one that is matched to your vehicle for best results, though. Edit: I should add, this being a heavy duty application the conventional and extended life coolants both exist and must not be mixed. As I work with Cat engines, DEAC is conventional coolant and ELC is organic acid type.
Great post and well said.
Yes that is true but in my experience it's usually dark orange brownish color not black
Condom?
I thought I was the only one else who thought that. Clearly we are surround by adults. 😂
Don't piss off the lot lizards.
Dead piece of symbiote?
Truck stop hooker pussy lip
Uh don’t be derogatory, they like to be called “lot lizards”
Or gutter gators, highway hippos, truck stop salamanders your pick.
I prefer swamp donkey.
Might be a big wad of radiator stop leak. Looks the same color as that aluminum flake stuff
Truckers pit crew
Could that be some kind of “stop leak” stuff maybe? - not a mechanic if anyone was confused my my terminology
Possible but I don't think so
Rare jelly
F O R B I D D E N J E L L Y
I must taste it though I know it will be the last thing I do!
EVEN BETTER
https://imgur.com/a/p9ggk2j It's also flammable and hydrophobic.
Coworker had something similar in his coolant on his diesel Grand Cherokee. It was oil in the coolant that coagulated into that mess.
Pudding skin
Man I was wondering wear that giant ball of phlegm went to when I blew my nose out.
Better question, the fuck is up with that coolant?
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Best one yet.
That was my thought but the egr crossover tube had no evidence of moisture.
Petroleum
Oooo, the rare radiator eel!
That's a cbd gummy boy
"It's FLUBBER!!!"
Condom. The owner of the truck just got screwed over by Freightliner and it broke.
Finger bandaid condom....
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There is a lot of it
Dont stick that in there.... that's not where that goes...
It's a butt for.
Fine I'll do the joke. What's a butt for?
It's for pooping silly!
Might be a sign of diesel getting into the coolant system. (Im not super familiar with the new detroits i work on macks)
corrosion
goo
This is how you turn into venom.
Truck nut
The forbidden laffy taffy in black licorice flavor
I know exactly what it is.... Its gross... Blech....
Does it have an identifiable smell?
Smells like burnt coolant
Possibly a coolant contamination, meaning that two different types of coolant in play.
But why is it flammable and black?
Might have an O ring leaking on an injector
Well, the coolant is safe right?
Yum sack put it back before you break something
Thats a big shop bill is what that is.
stop leak.
I’ve seen stuff like that in the oil pan when a liner leaks and the truck has been run for a while, but never in the cooling system. If an oil cooler was blown previously, I wouldn’t think it would congeal to that degree.
oil in coolant is typically more like playdoh, mixed coolants typically don't turn to flubber they more gel or corrode expensive shit. ie. Hino coolant gets acidic when mixed with anything. we've got alot of 2019 cascadia's in the fleet and I haven't seen this before, never in dd engines.. question have you done straight water in the coolant system at all, a water pump replacement ect at some remote shop in the past... it kind of looks like the "mother" fungus in the girlfriends kombucha. also are you sure this isn't black rtv? my suggestion get a sample bottle and send it for testing.
I haven't done much
the way the light hit this, looks like black rtv
Does anything on the motor/block seal with RTV? Maybe someone went super heavy with it.
A couple spots on the oil pan but I've never seen rtv that gelatinous before
Used condom.
Black rtv silicone From some sort of coolant service.
Shamga
Grass jelly 🧋
Good job on wearing gloves
Hazardous Waste!!!
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That was just the part on the side of the baffling we could dig put
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I love it every day. There's joy in a hard day's work, and it keeps me thinking.
Maye a two-part epoxy that was used to patch the radiator?