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
Yes. By little I'm talking two tablespoons. If more, then purge and refill with coolant and water.
There is something wrong with your wheels or steering. You car is NOT safe to drive.
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 .
The remains of the old coolant can cause the new coolant to fail. Using the wrong type of coolant can also damage the engine.
is it safe to use prestone coolant in my1998 lexus es 300
No it isn't because it means something has gone wrong with your 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.
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Wrong mixture make sure you have pre diluted/mixed coolant/antifreeze.
Luster Bomengen built the first coolant fan for the drive in theaters and also he built the vending machine..........................................