Pretty sure its the same thing that I've seen used on Subaru's to clean their engines. Upper engine cleaner, sea foam, carbon cleaner is designed to clean the intake manifold and combustion chamber.
http://www.subaru.com.au/parts/catal...on-maintenance

 
			
 
			
			 Originally Posted by threesix
 Originally Posted by threesix
					
 
					
					
					
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