Here is a VOA of the Pennzoil Marine TC-W3. http://www.bobistheoilguy.com/...owflat&Number=475055
Metals, sulfur and oil will poison catalyst. How will these metals, sulfur and oil affect the catalytic converter and emissions? Sulfur can form sulfuric acid in the fuel system, combustion chamber and exhaust. Is this good?
In the event that the catalytic converter is ruined using TC-W3, who pays?