Hey just noticed a blackish residue in the inside of my degas bottle around where the coolant level is. There isn't an oil slick on the coolant and my oil is not milky... so I don't fear the worst, but is this residue normal? It's not a ton, just enough to notice.
Hey Scott. I noticed this on my truck today. Keep an eye on it. I think its somewhat normal but it could be a sign of oil cooler o rings going out. I ordered the rebuild kit for mine just in case.
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