F-me, oil in my coolant
So, I go outside to work on the shifter problem, but I want to check to see what the freeze point of the coolant is. I know the two are not related, but thats how my brain works.
It appears that only water is in the radiator, or at least not enough coolant. So I drain some, and add straight coolant to raise the freezing point.
After running the truck for a while to get the coolant all circulated, I am getting a frothy brown mess coming out of the radiator.
I can only imagine that it is oil. Any ideas about where it is coming from? I checked the crankcase, and the oil there is clear and bright. I can't say that I checked the coolant before today, so I might flush the system with cleaner, then refill it and see if the "oil" comes back.
Thanks for any suggestions.