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		MichaelB65
VIP Member
		 
 
		
				
			HiSome “wash your car/van” places use a fairly aggressive acid to clean alloys - could this be the reason?
 
 
		
				
			 
 
		
				
			 
 
		
				
			 
 
		
				
			 
 
		
				
			 
 
		
				
			 
 
		
				
			 
 
		
				
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