Watch the temperature guage and make sure it is not running hot. I didnt do any of those things because of the brown.
![Aexit Universal 16mm 25mm Home Hardware Radiator Plastic](https://images-na.ssl-images-amazon.com/images/I/51ab94QhbLL._AC_SY355_.jpg)
Aexit Universal 16mm 25mm Home Hardware Radiator Plastic
Brown water in radiator. Amsoil heavy duty antifreeze coolant features a hoat formulation that delivers excellent protection against overheating and corrosion for up to 1 million miles 1609344 km 20000 hours or 8 years whichever comes first. From the pump it is through what is called a seep hole and signifies the pump is bad. That thick brown colored substance you can see after you open the cap on your cars radiator. Newer models have a plastic reservoir in the engine compartment either at the front of the engine near the radiator or against the firewall. Number one replace the water pumb. Also when the car is cool and has not.
You tend to notice it more after the engine has overheated. Without removing the cap a vehicle owner can simply look at the reservoir to observe its level and color. Have you seen sludge. Its pre mixed 5050 with high quality water and is compatible with all ethylene and propylene coolant colors. That brown fluid is probably water with alot of rust mixed in it. You might have noticed it now that you noticed your engine has been overheating.
Its that thick brown colored substance you see when you open the cap on your cars radiator. Ive changed the cylinder head water pump radiator most of the coolant lines flushed the system you name it. Unfortunately the engine probably overheated because of sludge build up. However your engine probably overheated because of sludge build up. The brown sludge you are referring to is often caused by rust or breakdown of the metallic and rubber components that comprise your cooling system. Older vehicles may not have a reservoir.
If its brown and milky you could have a bad head gasket letting oil seep into the coolant. The coolant is still brown. Since one of the leading causes of roadside breakdown is cooling system.