If you decide to try out a catalytic converter cleaner due to a check engine light code like P0420, the additive can often be an easy fix. However, it doesn't always work, which leads us to our ...

If you’re using a catalytic converter cleaner to try to pass inspection, you usually have to run through at least a full tank of gas with the additives before a dash light might go out; and ...

"Economical And Cleaner Cars With Lean-burn Catalytic Converter." ScienceDaily. ScienceDaily, 17 July 2007. <www.sciencedaily.com / releases / 2007 / 07 / 070712134929.htm>.