If the anti-freeze in your radiator or overflow tank is a chocolate color it usually means that oil is probably getting into your cooling system. It is possibly an intake gasket leaking or maybe a head gasket or there may be a crack. Have a qualified person pressure check your system as anti-freeze and oil aren't a good mix. Also check your oil for a high level or a milky coating on the dipstick.
bad head gasket go to auto store borrow cooling presser check if the coolant looks like a strawberry milkshake, check the transmission fluid, the transmission oil cooler inside the radiator is bad. if the coolant looks like a chocolate milkshake, probably head gasket as said above.
looks like a sensor or thermostat going into engine block
The transmission fluid cooled by routing it through the radiator. The fluid probably is a milky color because the radiator had failed internally allowing the coolant and transmission fluid to mix. Check the coolant and if looks milky change the radiator, coolant, and transmission fluid.
it means your low on radiator fluid
low radiator fluid
looks like cilinder head gasket is defect, engine pressure is coming in radiator, and cooling fluid goes into motor
Your transmission pan isn't large enough to cool the transmission fluid like the oil pan, so there is a transmission cooler that looks like a miniture radiator that is typically located in front of the radiator.
I ran out of time on Saturday to do it, but it looks like you remove the battery. Then you can reach down and open the drain plug. It is just below the battery at the bottom of the radiator.
Depends. A radiator in a car looks different from a heating radiator in a building. Which one?
A bad internal transmission cooler located inside the radiator. Fluid is pumped into it and you could have an exchange of fluids. If the transmission fluid looks like "pepto" (pink) you will being going for a rebuilt transmission. Antifreeze reacts with the clutch plates inside the transmission.
it looks like chocolate fudge
When mixed with coolant in the radiator it tends to look like a chocolate milkshake.