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California98Civic · 07-12-2013, 09:26 PM

Amazing info about the citric acid bath. Thanks. This Subaru Forester forum thread had some especially useful discussion, I thought: (All Years) Catalytic Converter Citric Acid Bath P0420 - Subaru Forester Owners Forum

I'll put this on my maintenance list for research early next summer, before my August smog test.

07-12-2013, 09:26 PM	#6 (permalink)
California98Civic Cyborg ECU Join Date: Mar 2011 Location: Coastal Southern California Posts: 6,299 Black and Green - '98 Honda Civic DX Coupe Team Honda 90 day: 66.42 mpg (US) Black and Red - '00 Nashbar Custom built eBike 90 day: 3671.43 mpg (US) Thanks: 2,373 Thanked 2,172 Times in 1,469 Posts	Amazing info about the citric acid bath. Thanks. This Subaru Forester forum thread had some especially useful discussion, I thought: (All Years) Catalytic Converter Citric Acid Bath P0420 - Subaru Forester Owners Forum I'll put this on my maintenance list for research early next summer, before my August smog test. __________________ See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.