Quote:
	
	
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					Originally Posted by landrovered
					
				 I have two cars that I have owned since new with over 200k miles on them on original engines. | 
	
 
It's not that it's going to necessarily hurt your car, but that it's just not needed with modern cars.  
Anyway, hope the OP figures out the overheating/low coolant warning problem.  Good luck.