Quote:
Originally Posted by Jamesp
Oil cooler is the best case for oil in the coolant because it's the cheapest and easiest. Cracked head will get you there too. I've also seen threads on accidently pouring oil in the coolant as the caps are so close. Browse this forum and you will find a lot of information. Head gaskets typically don't fail in these cars so that would be a long shot.
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Was thinking this too, but I would think clean oil wouldn't turn dark brown like that. Hence why I thinking of intermixing.
Hybrid Mode
