no oil in engine or water in radiator will cause engine to seriously o/heat! and eventually seize! major engine damage!!
Hard driving can cause an engine to use oil, but not drastically. Coolant level should not be effected unless the engine overheats.
Yes. The coolant carries the engine heat to the heater core. Without coolant the heater core does not get warm.
In most cases yes it will. The coolant will mix with the oil and this will immediately cause damage to engine bearings and rings. STOP driving any car with a blown head gasket. You must have this repaired immediately or you will destroy the engine.
It can do far worse, such as destroy your engine block. I wouldn't worry about your heater core, I would worry about your Engine.
Coolant is used to keep an engine in a vehicle at a temperature safe for operation. If no coolant is in the reservoir, an engine will not start.
You can keep driving the vehicle if you want to destroy the engine. The more you run the engine the more damage will be done. Coolant mixing with the oil will cause severe engine wear.
Head gasket failing The most common cause is a blown head gasket. Stop driving the car as severe engine damage will occur.
Depending on how far along the engine is before it totally seizes up. Coolant loss = engine overheating= internal components expanding beyond tolerances= seizing up= new motor.
Of course you can, but the question is should you. The answer is, if you want to do some serious damage to the engine and eventually destroy it completely then keep driving it. Reason being is that the coolant will mix with the engine oil. This coolant is a poor lubricant and is very corrosive to engine bearings. it will cause severe engine wear. So stop driving this car immediately and do not drive it again until it is repaired.
A faulty engine coolant temp sensor can cause that.
not typically , extreme lower temps won't allow the engine to move quickly = it is better to warm the engine some 2-3 minutes minimum. the cracks could be from frozen water (not enough antifreeze) in the coolant passages .
Yes, If to much leaks out this will cause the engine to over heat, smoke and or stall hence the name engine COOLant :)