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Rislone Catalytic Converter Cleaner: What It Is, How It Works, and Why You Might Need It GuideMechanic.Com Catalytic converter issues can be one of the most stressful and expensive problems a vehicle owner faces.
When this critical emissions component becomes clogged or inefficient, it can lead to a loss in performance, increased emissions, and even a Check Engine Light with codes like P0420.
Fortunately, solutions like Rislone Catalytic Converter Cleaner offer a fast, affordable, and DIY-friendly way to fix or prevent these issues.
This guide will take an in-depth look at Rislone’s cleaner—what it does, how to use it, what results you can expect, and why it’s become a popular choice for car owners worldwide.
See Also: Wynn’s Catalytic Converter Cleaner 325ml
What is Rislone Catalytic Converter Cleaner?
Rislone Catalytic Converter Cleaner is a fuel additive specifically designed to clean the entire emissions system in gasoline-powered vehicles. This includes:
- The catalytic converter
- Oxygen and lambda sensors
- Fuel injectors
- The combustion chamber
- The exhaust system
It helps to reduce carbon build-up, soot, and unburned hydrocarbons that can affect the performance and efficiency of your catalytic converter. Unlike mechanical fixes, Rislone’s formula works by being added directly to your gas tank and cleans as you drive.
Key Features & Benefits
Let’s break down what makes Rislone Catalytic Converter Cleaner a go-to option for drivers:
✅ Emissions System Cleaner
Rislone is engineered to reduce emissions by breaking down carbon deposits that accumulate on the catalytic converter and oxygen sensors. This can help vehicles pass emissions tests, especially if they failed previously.
✅ Restores Performance
Clogged catalytic converters reduce airflow and exhaust efficiency. By clearing obstructions, Rislone helps improve fuel economy, throttle response, and acceleration.
✅ Eliminates Rotten Egg Smell
A sulfur-like “rotten egg” smell is often a sign of a struggling catalytic converter. Rislone helps eliminate this odor by clearing unburned fuel deposits.
✅ Helps Clear Trouble Codes
Many users report that Rislone can help clear P0420 (Catalyst Efficiency Below Threshold) and P0430 codes after a full treatment cycle.
✅ Safe for All Gasoline Engines
It is suitable for use in:
- Cars and trucks (fuel-injected or carbureted)
- Hybrid vehicles
- Turbocharged engines
- Flex-fuel and ethanol blends
When Should You Use Rislone Catalytic Converter Cleaner?
Here are signs that your car may benefit from Rislone:
- Check Engine Light with emissions-related codes (e.g., P0420, P0430)
- Failed emissions or smog tests
- Decreased fuel economy
- Reduced engine performance or sluggish acceleration
- Unusual exhaust smells
- Engine misfires or rough idle
- Preventative maintenance every 5,000 to 10,000 miles
Important note: Rislone is effective for carbon or fuel-related buildup, not for physically broken or melted catalytic converters.
How to Use
Using the product is straightforward and requires no tools or mechanical knowledge. Just follow these steps:
Step 1: Check Fuel Level
Make sure your gas tank has at least half a tank of fuel. Rislone is designed to treat up to 21 gallons (79 liters) of fuel.
Step 2: Add the Cleaner
Shake the bottle and pour the entire contents of Rislone Catalytic Converter Cleaner (16.9 oz or 500ml) into the gas tank.
Step 3: Drive Normally
Drive as you usually would. For best results:
- Try to drive at higher speeds or longer durations to raise the exhaust system’s temperature.
- The cleaner works best when the catalytic converter is hot.
- Complete the tank of treated fuel before refueling again.
Step 4: Monitor Results
Use an OBD2 scanner to check if trouble codes have cleared.
You should notice improved engine performance, reduced emissions, and smoother idling after a full tank.
How Often Should You Use It?
Rislone recommends using their Catalytic Converter Cleaner:
- Every 5,000 miles (8,000 kilometers) as preventive maintenance
- After experiencing emissions-related performance issues
- Prior to emissions testing for a better chance of passing
Does Rislone Catalytic Converter Cleaner Work?
Thousands of car owners report positive results, particularly when used as early intervention for a failing catalytic converter. Here are some typical outcomes:
✅ Success Stories:
- “P0420 code gone after using Rislone and driving 200 miles. Saved me $1,200!”
- “My car passed the smog test after failing due to high NOx emissions.”
- “Improved acceleration and fuel mileage within days.”
⚠️ Mixed Reviews:
- “Code didn’t go away immediately. Took a second bottle and longer drive.”
- “Helped with smell and performance, but CEL came back after a few weeks.”
❌ Limitations:
- Not effective for cracked, melted, or physically damaged converters.
- Won’t fix issues caused by faulty oxygen sensors or leaking injectors.
In essence, Rislone works best for mild to moderate carbon fouling but is not a magic fix for all converter problems.
Comparisons: Rislone vs Other Catalytic Converter Cleaners
- Rislone 500ml $18–$25 ✅ ✅ Treats full emissions system
- Cataclean 473ml $25–$30 ✅ ✅ Premium EPA-approved cleaner
- Wynn’s 325ml $15–$20 ✅ ✅ Popular in Europe
- Liqui Moly 300ml $12–$18 ✅ ✅ German formula, very effective
- STP Cleaner 155ml $8–$12 ✅ ❌ Budget option
Rislone offers a high-volume formula at a mid-range price, making it ideal for those who want more for their money without sacrificing performance.
Where to Buy Rislone Catalytic Converter Cleaner
You can purchase Rislone from a variety of online and in-store retailers, including:
- Amazon
- Walmart
- AutoZone
- O’Reilly Auto Parts
- Canadian Tire
- Advance Auto Parts
- NAPA
Prices typically range from $18 to $25 USD, depending on location and retailer.
Pro Tips for Best Results
- Use a high-quality fuel (preferably top-tier) when adding the cleaner.
- Replace spark plugs or oxygen sensors if they are faulty before using Rislone.
- For stubborn issues, use two bottles back-to-back for a deeper clean.
- Combine with an engine decarbonizer or intake cleaner for complete combustion system restoration.
Final Verdict: Is Rislone Catalytic Converter Cleaner Worth It?
If your catalytic converter is struggling due to carbon deposits or unburned fuel, Rislone is absolutely worth trying before considering a costly replacement.
With its comprehensive cleaning formula, ease of use, and widespread availability, it’s one of the best value products in the emissions treatment category.
It may not be a miracle fix for all catalytic converter problems, but for early intervention, prevention, or emissions test prep, Rislone delivers on its promise.
Quick Recap: Rislone Catalytic Converter Cleaner
- Type: Fuel additive
- Volume: 500ml (16.9 oz)
- Use: Clean catalytic converter, sensors, injectors
- Application: Add to gas tank with 1/2 to full tank of fuel
- Best For: P0420/P0430 codes, emissions issues, preventive maintenance
- Compatible With: All gasoline engines including turbo and hybrid
- Where to Buy: Amazon, Walmart, AutoZone, Canadian Tire
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