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My truck is different, obviously, but I have had the exact same experience. First year, I smelled coolant regularly when parking in my garage. To the point that I could constantly check for a spot under my engine (never found one). The smell has gone away now (coming on 2 years).
It's just coolant that's become gelatinous. I'd say it's more of an orange color vs brown but we're splitting hairs. If I had to guess the coolant splashes up in the reservoir and gets hot. So it starts to change physical properties over time.
Shouldn't be dirt getting into reservoir. That's why there is a cap on it
The overflow is open.
Overflow is a tube that points down. Would have to be cooling down in really dusty conditions to get any dirt in through that
Just as an FYI for anyone reading - Be careful when using the all in one's. I think the newer Peak 10x is potentially a safe coolant. It's a p-oat with no 2-EHA, silicate, nitrite, borate or amines. Allegedly you can mix the two (our trucks are OAT) but it's not recommended. There's a potential risk for the coolant gelling when mixed.
Don't think he was being funny. Has been an issue in my 19 Ram since day one. Sine the expansion tank isn't a sealed system......
That's the case with most cars. Cooling systems are designed to accommodate for coolant expansion and vent to atmosphere, which is usually accomplished with an expansion/recovery tank or just a tube (like on much older cars). Based on your theory you should smell coolant after driving pretty much any vehicle that was warmed up to operating temp.
What did they charge for that?
