Tech Tip: How to easily restore catalytic converter performance

Sept. 29, 2023
When a customer has a vehicle with a check engine light glowing, and the OBD-II reader shows a P0420 or related (P0421, P0430, P0431) code, it’s probably because there’s an issue with the catalytic converter efficiency.

When a customer has a vehicle with a check engine light glowing, and the OBD-II reader shows a P0420 or related (P0421, P0430, P0431) code, it’s probably because there’s an issue with the catalytic converter efficiency.

“To explain to your customers why P0420 or related codes should not be ignored, point out that triggering the code means that catalytic converter is not efficiently removing exhaust pollutants,” says Clay Parks, vice president of development for Rislone. “Not only does this mean the vehicle won’t pass emissions tests, but it also can result in poor fuel mileage, reduced power, and decreased vehicle performance. What’s more, even though an inefficient converter itself isn’t a hazard to the driver or passengers, it can overheat and damage engine components, leading to vehicle breakdown and expensive repairs.”

A quick and easy solution to recommend for clearing the code and restoring catalytic converter performance is Rislone Cat Complete Fuel, Exhaust and Emissions System Cleaner (No. 4720).

This advanced formulation product cleans the entire emissions and exhaust system, as well as the fuel system. It reduces zinc and phosphorous catalyst contamination to restore catalytic converter function and uses synthetic detergents to remove intake valve deposits (IVD), combustion chamber deposits (CCD), and other fuel deposits. The formula also includes a combustion catalyst to improve gas mileage and deliver smoother idling and better throttle response.

Rislone Cat Complete is formulated with high-performing detergents and heavy-duty cleaning solvents that effectively scrub and remove contaminants, soot, carbon build-up, and oily residue from the fuel injectors, combustion chambers, turbo, catalytic converters, oxygen sensors, and the exhaust. 

Information provided by Rislone

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