More than likely the engine needs rebuilding.
If you are talking about gas treatment poured in the gas tank, and you only poured in one can, the answer is no. White smoke from the tail-pipe is normally an indication of a blown head gasket. Stop driving the car until you have this looked at.
No there's nothing you can put it to stop it what you need to do is repair it. The white smoke from your exhaust is caused by a blown head gasket. You must replace the head gasket. Stop driving this car until this is repaired or you will destroy the engine.
White smoke coming from the exhaust is a symptom of coolant entering the combustion chamber. This will cause the engine to miss and vibrate. More than likely your have a blown head gasket. You must STOP driving this car until this is repaired. Severe engine damage will occur if you continue to run this engine.
White smoke from the exhaust is caused by coolant entering the combustion chamber. This is almost always caused by a blown head gasket, cracked head, or both. STOP driving this car until you get this repaired or you will destroy the engine.
If by "stop the engine", you mean turn the car off, then the answer is NO!
ENGINE SMOKE Check Related link below
White smoke is coolant entering the combustion chamber. You have a blown head gasket. STOP driving this car immediately or you will destroy this engine. The head gasket must be replaced.
White smoke is coolant burning off. You have a coolant leak or the engine is overheating. Have this looked at by a professional ASAP, and stop driving the car.
The color of the smoke will help identify the problem. Blue smoke is engine or transmission oil. Black smoke, excess fuel. White smoke, engine coolant.
Blown head gasket or cracked head. STOP driving this car NOW. Serious engine damage will occur if you continue to run this engine in this condition.
Sorry to tell you but you have a blown head gasket, cracked head, or both. The white smoke is coolant entering the combustion chamber. STOP driving this vehicle or you will destroy the engine. You must have this repaired and it is not cheap.