Absoulutly not. If you have not started the engine, drain all the oil out and let it sit for at least an hour with the drain plug removed. Refill with oil and you will be ok. If you started the engine then also change the filter.
A:
I would also take it to a service shop asap. This all depends on how much coolant you added to the oil and the size and type of engine.
Yes. By little I'm talking two tablespoons. If more, then purge and refill with coolant and water.
No, you run the risk of destroying the motor.
It will be safe to drive short distance as long as the car does not over heat. You can top up the engine coolant or use water/coolant mixture till you fix the problem which could be leaking hose pipe. leaking radiator or faulty radiator cap
No , this coolant is coming from your heater core and you are losing engine coolant ; you need to have this repaired because the engine will overheat and suffer damage that will be more expensive than the repair of the heater core .
I wouldn't drive the car . What I would do is use a cheap plastic turkey baster bought from Wal*Mart or another store and use that to suck out the window washer fluid from the engine coolant reservoir ( I don't know if it mixes or floats on top , if it mixes I would remove all the contents of the engine coolant reservoir and then replace it with a 50 / 50 mix of the correct type of antifreeze and preferably distilled water ( P.S. I'm not a mechanic / technician , just what I would do )
drive it without coolant
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NO! Depends on your definition of safe?
it is safe to drive slower because you could get in a car accident if you drive really fast
If it's stuck open, yes you can. If it's stuck close, no you cannot drive the car.
Depends. You might be low on coolant. Or your heater core could be clogged. Neither of those instances is particularly "safe". But, it could just be a blend door, which wouldn't matter.
The driver is responsible for the condition of the car and the safety of passengers. It it is not safe to drive, don't.