Join Date: Sep 2012
location: Skokie, IL (next to Chicago)
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Welcome to Drive Accord. Nice first post with informative pics....
It is always a good idea to change (not just top off) all fluids as soon as you purchase a used car. This is because you don't really know what is in there.
The previous owner could have added fluids improperly, or added fluids at Jiffy Lube which may not have reacted well with existing fluid. I've seen people mix full strength Ford coolant with Honda's blue coolant- it is not pretty.
That being said- it looks like cross contamination. Before you spend huge money, be honest- does the car misfire? Any check engine light? Can you go to Pep Boys/Advance Auto/Autozone, etc and ask them to pull your codes (it is free and takes 2 minutes)?
If the car is running fine, and there are no codes, I would probably change the coolant out using Honda's drain and fill procedure. I would use Honda coolant. If this brown stuff reappears in a day or two then most likely you have a crack or blown head gasket whereby the oil is mixing with the coolant. If not, then it was "user error" where someone put something in there they should not have.
You can also send a small oil sample in to an oil analysis place like Blackstone labs. For under $30, they will tell you exactly what is in your oil. If they detect certain metals- it could indicate certain failures, etc. Coolant? Well that means your oil and coolant are mixing so something is blown or cracked.
When you bought the car, what color was the coolant? Was it blue, green, or red?
2005 Accord EX-L
PZEV emission vehicle (!)
4-cylinder, 5-speed Automatic Transmission
16.5 pound Acura RSX 16 inch wheels & 215/55R 16 Continental Extreme Contact DWS06 tires
145k miles (as of Jan '18)