Absolutely.  The cost of the additives is small.  Fuel starts to oxidize and cause all the problems you described.  Ethanol is supposed to be even worse and seeing where your from I would bet you don't get of an option when it comes to that.  The use of stabilizer is very effective.
		 
		
		
		
		
		
		
			
		
		
		
		
		
	
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