10 Best dura lube severe catalytics of 2026

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1

DURA LUBE
Dura Lube Severe Catalytic and Exhaust Treatment | 16 oz., 6-Pack
Main highlights

Enhanced Fuel Economy
Helps increase fuel economy with universal fit for all engines.

Catalytic Converter Maintenance
Ideal for use before replacing catalytic converter to maintain efficiency.

Quick Engine Light Resolution
Quickly turns off engine warning lights, as praised by customers.
9.8

Exceptional

Our Rating

8.7
Simple to use

8.4
quality of ingredients

8.2
worth the money
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Value for Money

2

DURA LUBE

Dura Lube Severe Fuel System Cleaner | 16 oz., 6-Pack
9.7

Exceptional

Our Rating
3

DURA LUBE
Dura Lube Severe Catalytic and Exhaust Treatment Cleaner Fuel Additive, 16 fl. oz., (PN: HL-402409 PDQ3)
Main highlights

Performance and Economy Booster
Enhances fuel systems, improves engine performance, and increases fuel economy.

Ideal for Catalytic System Protection
Best used before replacing catalytic converters to maintain efficiency.

Customer Praised Emission Reduction
Notably reduces emissions, aiding in passing smog tests.
9.6

Exceptional

Our Rating

9.9
Simple to use

8.0
worth the money

8.0
distance
4

DURA LUBE
DURA LUBE 2 Pack Severe Catalytic and Exhaust Treatment Cleaner Fuel Additive, 16 fl. Oz, 2-Pack Combo Pack
Main highlights

Boosts Engine Performance
Enhances fuel systems and engine performance, improving fuel economy and catalytic efficiency.

Ideal for Pre-Replacement Use
Use before replacing catalytic converter to potentially avoid costly repairs.

Highly Effective Cleaner
Customers praise its ability to clear codes and improve exhaust system function.
Key specs
- installation:Add to vehicle anytime
- oem part number:HL-40240-02
- vehicle fit:Universal fit
- material:N/A
- design:N/A
9.5

Excellent

Our Rating
5

DURA LUBE

DURA LUBE Severe Fuel System Cleaner | 16 oz., Single
9.4

Excellent

Our Rating

9.7
Simple to use

9.3
distance

9.1
worth the money
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6

Liqui Moly
Liqui Moly Catalytic System Clean 300 ml 7110. Cleans The Injection System and The Combustion Chamber.
Main highlights

Catalytic Converter Protection
Prevents clogging with soot, ensuring optimal converter performance.

Ideal for Gasoline Engines
Best suited for all gasoline engines with catalytic converters.

Enhanced Fuel Combustion
Commonly praised for improving fuel combustion and efficiency.
9.2

Excellent

Our Rating
7

DURA LUBE
DURA LUBE Severe Fuel System Cleaner | 16 oz., 2-Pack
Main highlights

Restores Optimal Engine Performance
Effectively removes carbon deposits from fuel injectors, intake valves, and combustion chambers.

Ideal for Gasoline Engines
Compatible with all gasoline-powered vehicles, including ethanol-blended fuels.

Praised for Fuel Efficiency Improvement
Enhances fuel combustion, leading to better mileage and reduced fuel consumption.
Key specs
- Fuel Economy:Improves fuel efficiency
- Performance Improvement:Restores optimal engine performance
- Volume:16 oz., 2-Pack
- Compatibility:All gasoline engines
- Cleaner Function:Removes carbon deposits
9.1

Excellent

Our Rating
8

DURA LUBE
Dura Lube Severe Instant Quiet Helps Silence Engine and Transmission Noise | 8 oz., Single
Main highlights

Key Features
Reduces friction, heat, and engine sludge. Non-viscous formula quiets mechanical parts. Safe for warranties, works in gas or diesel engines.

Ideal Use Cases
Perfect for use in crankcases, transmissions, or power steering systems. Ideal at oil change or between for noise reduction in any mechanical machine.

Customer Praise
Most reviews highlight its effectiveness in significantly reducing engine noise and improving overall mechanical performance with easy application.
9.0

Excellent

Our Rating

9.5
Simple to use

8.0
worth the money
9

DURA LUBE
Dura Lube Diesel DPF & Catalytic Treatment, Diesel Particulate Filter Cleaner and Diesel Catalytic Converter Cleaner | 16 oz., Single
Main highlights

Reduces Soot and Increases Efficiency
Lowers soot forming particulate emissions, reduces soot build-up inside the catalytic converter, increases exhaust system life, and improves fuel efficiency.

Ideal for Stop and Go Driving
Perfect for vehicles in stop-and-go traffic or long idle situations, recommended usage is once every 3 months for optimal performance.

Improves Engine Performance
Customers frequently praise the product for enhancing engine performance, increasing MPG, and clearing engine codes related to catalytic converter and O2 sensors.
8.9

Very Good

Our Rating
10

DURA LUBE

Dura Lube Engine Treatment | 32 oz., Single
8.7

Very Good

Our Rating

10 Best dura lube severe catalytics of 2026

1

Dura Lube Severe Catalytic and Exhaust Treatment | 16 oz., 6-Pack

8.7

8.4

8.2

How do we rank?

How do we rank?

Analyzing top stores

2

Dura Lube Severe Fuel System Cleaner | 16 oz., 6-Pack

3

Dura Lube Severe Catalytic and Exhaust Treatment Cleaner Fuel Additive, 16 fl. oz., (PN: HL-402409 PDQ3)

9.9

8.0

8.0

4

DURA LUBE 2 Pack Severe Catalytic and Exhaust Treatment Cleaner Fuel Additive, 16 fl. Oz, 2-Pack Combo Pack

5

DURA LUBE Severe Fuel System Cleaner | 16 oz., Single

9.7

9.3

9.1

6

Liqui Moly Catalytic System Clean 300 ml 7110. Cleans The Injection System and The Combustion Chamber.

7

DURA LUBE Severe Fuel System Cleaner | 16 oz., 2-Pack

8

Dura Lube Severe Instant Quiet Helps Silence Engine and Transmission Noise | 8 oz., Single

9.5

8.0

9

Dura Lube Diesel DPF & Catalytic Treatment, Diesel Particulate Filter Cleaner and Diesel Catalytic Converter Cleaner | 16 oz., Single

10

Dura Lube Engine Treatment | 32 oz., Single

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