Bar's Products Emissions System Cleaner

Emissions System Cleaner from Bar's Products

When a check engine light points to catalytic converter efficiency or the vehicle struggles through a smog test, a chemical cleaner is often the first, least invasive step before parts replacement. Bar's Products, the Holly, Michigan manufacturer behind Bar's Leaks, Rislone and Hy-per Lube, approaches this job with the same philosophy it has applied since 1947: easy-to-use chemical tools that tackle a problem from the bottle, without a trip to the shop.

Rislone Cat Complete Fuel, Exhaust & Emissions System Cleaner

The anchor of Bar's Products' emissions lineup is the Rislone Cat Complete, part number 4720, sold in a 16.9 oz bottle. Rather than treating only the exhaust end, it is designed to clean the fuel system and the entire exhaust and emissions path in a single treatment. The manufacturer states that it works with gasoline, ethanol-blended and hybrid vehicles.

The formulation is aimed at several specific symptoms and components:

• Cleaning a dirty catalytic converter and reducing excess hydrocarbon, CO and NOx emissions
• Reducing zinc and phosphorus catalyst contamination to help restore converter function
• Cleaning the tip of the oxygen (lambda) sensor
• Deodorizing sulfur exhaust smell
• Helping clear common OBD codes such as P0420 and turn off related check engine lights
• Supporting emissions smog test readiness; the product is promoted as EPA registered and 50-state legal

That focus on catalyst poisoning and sensor fouling is what separates a dedicated emissions cleaner from a basic fuel injector additive. Zinc and phosphorus from engine oil can coat catalyst surfaces over time, and a coated O2 sensor can send skewed data to the engine computer. Addressing both in one dose makes sense for drivers dealing with a lingering efficiency code.

Beyond Gasoline: Diesel Emissions Care

The wider Rislone family also includes diesel-oriented emissions products, such as DPF Clean for diesel particulate filters, exhaust and emission systems, and Crystal Clean for DEF and SCR systems, which targets the DEF injector and sender. These reflect the company's expansion from sealing and engine treatment into fuel system cleaners and emissions-system products. Check current product listings to see which of these are offered on this page.

Tips for Using an Emissions Cleaner

• Confirm the diagnosis first. A cleaner can help with deposit-related issues, but a failed converter or faulty sensor may still need replacement.
• Add the treatment to a fuel tank as directed on the label, and follow the dosage for your tank size.
• Pair cleaner use with fresh oil and good fuel-system maintenance to limit future catalyst contamination.

Why Choose Bar's Products

Bar's Products is a family-owned, ISO 9001 certified manufacturer, and its chemicals are made in the U.S.A. Learn more about the company on the Bar's Products brand page, or compare other options on the Emissions System Cleaner category page.