Cataclean - If you've used another fuel additive in the past and it didn't work, you can use Cataclean's 8-in-1 Fuel and Exhaust System Cleaner to help remove harmful carbon deposits. We

Cataclean (@Catacleanuk) / X

How to clean a catalytic converter without removing it - Quora

Cataclean 120007-2PK Fuel and Exhaust System Cleaner - 16 fl. oz. Pack of 2

Does this stuff actually make a difference? : r/CarTalkUK

Update: Are these Catalytic converters i removed from my 2009 Murano LE good or bad (pics inside)

Cataclean 120009CAT Fuel and Exhaust System Cleaner

CataClean Fuel Cleaner 16.7oz

Cat Complete Fuel, Exhaust & Emissions System Cleaner

Cataclean