Often it's a rotted pipe or a leaky hose or a leaky water pump. Usually is't best to look at it and see where the coolant is coming out, then repair it.
a gasket as a rule
When it was damaged. If you don't have coolant leakage, but the level collant drops down it means you have internal leakage of coolant. You must replace the head gasket of course if want to drive your car. van over heats
If there really is no leak then it is likely a head gasket allowing coolant to leak into the cylinder and go out the exhaust as steam.
Valvoline Zerex.
What type of coolant should i use in 2006 Nissan Quest
from a non-mechanic but usually there is some coolant leakage
yes
Pressure test the system to determine where leak is originating
The dashboard sign on a Mitsubishi Canter indicating coolant leakage into the engine typically resembles a thermometer or a gauge with a water symbol. This warning light indicates that the engine temperature is rising due to insufficient coolant, which could be a result of a leak. If this light illuminates, it is crucial to check the coolant levels and inspect for leaks to prevent potential engine damage. Ignoring this warning can lead to overheating and serious engine issues.
Not necessary to drain all coolant, just enough to be able to remove radiator hose from thermostat housing and prevent much leakage.
You have a coolant leak somewhere. Fill and check underneath for any obvious leakage.
Yes, an air lock can contribute to coolant leakage in a Fiat Brava. When air is trapped in the cooling system, it can create pressure imbalances, leading to overheating and potential failure of hoses or gaskets. This can result in coolant leaks as the system struggles to maintain proper circulation and pressure. It's important to bleed the cooling system to eliminate air locks and prevent such issues.