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.
It means that your engine oil is mixing in with your radiator fluid. You probably have water in your oil too. I would take it in and have it fixed.
Probably any normal thing like not enough Radiator Fluid or something is wrong with your radiator or a head gasket leak could cause the radiator fluid loss. Does this Help?
Unless your radiator has a leak, the radiator fluid stays in the radiator.
Only if it is allowing Fluid to escape. Does the radiator and heater core have enough fluid to circulate. If not you will not have heat.
1 simple cause may be a damage radiator cap or simply low fluid.
radiator fluid
Well a possibility is a problem with the radiator, either it needs to be fixed, replaced, or has no radiator fluid in it to cool the engine.
Thermostat stuck closed.
It could be your thermostat how is the fluid in your radiator?
broken radiator
There are a number of reasons: 1. Faulty thermostat can cause the fluid to overheat and expand; thus causing the fluid to vent from the overflow pipe. 2. A punctured radiator hose, or a broken seal can cause loss of fluid. 3. Damaged radiator core.
Your car will leak anti-freeze/coolant. If you run out of fluid in your radiator then your car will overheat in a short period and cause much more damage. Fix your radiator!