DURA LUBE SEVERE CATALYTIC & EXHAUST TREATMENT / 16 oz
CHECK ENGINE LIGHT (CEL) FIX IT—GUARANTEED ✅︎
If your check engine light is on and you're seeing OBD code P0420 (Catalyst System Efficiency Below Threshold) or other emissions-related codes, Dura Lube® Severe Catalytic Converter Cleaner & Exhaust System Treatment can help.
This advanced, high-strength formula is designed to clean catalytic converters and oxygen sensors, helping restore emissions system efficiency. By reducing carbon buildup and improving exhaust flow, it supports proper engine performance and may help turn off the check engine light while assisting in passing emissions and smog tests—without the need for costly repairs.
Use before replacing your catalytic converter.
Note: This product does not repair damaged or physically worn-out catalytic converters.
✅︎ TURNS OFF THE CHECK ENGINE LIGHT & OTHER OBD codes*
✅︎ Helps pass emissions & smog testing
✅︎ Helps restore catalytic converter efficiency
✅︎ Cleans and conditions catalytic systems & oxygen sensors
✅︎ Recommended alternative before catalytic converter replacement
✅︎ Ultra-concentrated formula — only 4 treatments per year
BENEFITS:
- Targets stubborn carbon buildup in catalytic converters
- Cleans oxygen sensors to help restore accurate fuel trim readings
- Helps protect catalytic systems from oil-related contamination
- Reduces phosphorus and zinc deposits at the catalyst inlet
- Neutralizes sulfur odors and improves exhaust smell
- Helps restore fuel economy, power, and acceleration
- Helps reduce harmful tailpipe emissions
*OBD CODES: P0420, P0421, P0430, P0431, P0300, P0401, P0171, P0174
USE BEFORE REPLACING YOUR CATALYTIC CONVERTER
✅︎ PROVEN, HIGH-STRENGTH CLEANING CHEMISTRY
✅︎ RESTORES MAXIMUM POWER & ACCELERATION
✅︎ HELPS PASS STATE
✅︎ EMISSIONS SMOG TESTS
✅︎ ELIMINATES HYDROCARBON & SULFUR EXHAUST ODORS
✅︎ EPA REGISTERED EXHAUST FORMULATION
✅︎ REDUCES HARMFUL POLLUTANTS AT COMBUSTION
How does a catalytic converter work?
ONLY NEED TO USE 4 X PER YEAR: Spring / Summer / Fall / Winter
🔧 For vehicles experiencing a P0420 code, use the treatment immediately and monitor the check engine light.
Applying Dura Lube is easy and requires no mechanical expertise:
✅ Directions: Add the entire bottle into the fuel tank. Treats 16 gallons (60 liters) of fuel or 1 oz. per gal. (30 mL per 3.8 L).
✅ Fill the tank with fuel.
🚗 Drive normally to allow the product to clean your catalytic converter and exhaust system.
🏁 Numerous drivers have reported significant improvements following a single treatment. A second treatment may be administered after completing a full tank of fuel.
✅ Use every 3,000 miles to maintain your catalytic converter’s optimal performance.
*Results may vary based on the specific conditions of the vehicle.
⚠️ If your catalytic converter has reached an advanced stage of deterioration, it is no longer feasible to repair it with a catalytic and emissions treatment. In such cases, replacing the catalytic converter is the only viable solution.
UPC: 715981402407
Proposition 65 Warning for California Consumers
⚠️ WARNING: This product can expose you to chemicals including Naphthalene, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov
PLEASE NOTE THAT THIS PRODUCT IS NOT INTENDED TO BYPASS, DEFEAT, or SHUT DOWN EMISSION CONTROL DEVICES INCLUDING OXYGEN SENSOR ELIMINATORS, SIMULATORS, OR OTHERWISE ACT IN ANY WAY AS A TUNER OR DELETE KIT. THE USE OF THIS ADDITIVE WILL NOT ALTER THE FUNCTIONALITY OR OVERRIDE MALFUNCTION INDICATOR LIGHTS ON AN ENGINE'S OBD SYSTEM.