If the antifreeze looks like chocolate milk what can that be a sign of?
To my knowledge brown antifreeze is a sign of a blown head gasket. If its been in there a while (years with alot of mileage) this is the sand that has broken away left over from casting the engine block. if its this bad YOU REALLY NEED TO FLUSH THE SYSTEM! Its mud and rust litterally.
To make chocolate milk you need chocolate and milk. If you have a liquid chocolate like Hershey's or Nesquik you can just poor the chocolate into the milk and mix. If all you have is solid chocolate, you will need to heat up the milk (slowly!) and mix in the chocolateuntil it's all mixed in. Then you can either drink it hot (hot chocolate or wait for it to cool (chocolate milk).