Keeping your motorcycle’s exhaust system clean is essential for optimal performance and longevity. A well-maintained exhaust not only looks better but also helps your bike run more efficiently. Regular cleaning of your motorcycle exhaust pipes can improve engine performance, increase fuel efficiency, and prevent rust and corrosion that can damage your bike over time.
Dirt, carbon deposits, and moisture can accumulate inside and outside your exhaust system, restricting airflow and causing various issues. The good news is that with the right tools and techniques, you can clean your motorcycle exhaust effectively at home. This maintenance task doesn’t require professional skills, just some patience and attention to detail.
Whether your bike has chrome, titanium, or carbon fiber exhaust pipes, proper cleaning methods will help maintain that signature roar while extending the life of your exhaust system. Different finishes require specific cleaning approaches to avoid damage while achieving the best results.
Key Takeaways
- Regular exhaust cleaning improves engine performance, fuel efficiency, and prevents damaging rust and corrosion.
- Proper cleaning techniques vary based on exhaust material and finish, requiring specific products and methods for best results.
- A clean exhaust system reduces emissions, maintains optimal airflow, and preserves the distinctive sound quality of the motorcycle.
Understanding the Motorcycle Exhaust System
The motorcycle exhaust system plays a vital role in your bike’s performance, sound, and appearance. This complex system manages exhaust gases while affecting everything from engine efficiency to the distinctive rumble that turns heads.
Components of the Exhaust System
A typical motorcycle exhaust system consists of several key parts working together. The header pipes connect directly to the engine’s exhaust ports, channeling hot gases away from the cylinders. These feed into the collector, which combines exhaust from multiple cylinders.
The muffler or silencer reduces noise and contains baffles or sound-absorbing materials. Many systems include a catalytic converter to reduce harmful emissions before gases exit through the tailpipe.
Most systems also feature heat shields to protect riders from burns and prevent heat damage to nearby components. Modern exhaust systems might include oxygen sensors that help the engine’s computer optimize the fuel mixture for better performance.
Function and Importance
The exhaust system serves several critical functions beyond simply removing gases. It helps maintain optimal engine performance by ensuring proper backpressure and flow of exhaust gases.
A well-maintained exhaust system improves fuel efficiency and power output. It reduces harmful emissions by managing the transformation of carbon monoxide into less harmful compounds.
The system also controls engine noise to meet legal requirements while creating the distinctive sound that many riders desire. Temperature management is another key function, as the exhaust directs hot gases away from the engine and rider.
Regular inspection and cleaning of your exhaust prevents performance issues and extends the life of your motorcycle.
Common Types of Motorcycle Exhaust Pipes
Stock exhaust systems come factory-installed and are designed to meet emissions standards and provide balanced performance. They’re typically heavier but more affordable than alternatives.
Stainless-steel pipes offer excellent corrosion resistance and durability. They develop a distinctive blue or gold patina over time that many riders find attractive. They require specific cleaning techniques to maintain their appearance.
Chrome pipes provide a classic, mirror-like finish that many riders prefer for custom and cruiser bikes. They require regular polishing to prevent tarnishing.
Aftermarket exhaust options include slip-ons (replacing just the muffler) and full systems. These can be made from titanium, carbon fiber, or aluminum and often provide weight reduction and performance gains.
Performance pipes like high-flow headers and racing systems maximize power but may increase noise and affect emissions compliance.
Preparation for Cleaning
Before diving into the cleaning process, proper preparation ensures both your safety and effective results. Taking time to gather the right tools and inspect your exhaust system will make the entire cleaning process smoother.
Safety Precautions
Always make sure your motorcycle has completely cooled down before beginning any cleaning. Hot exhaust systems can cause severe burns. This cooling period typically takes 1-2 hours after riding.
Wear protective gloves to shield your hands from chemicals and sharp edges. Safety glasses are essential to protect your eyes from cleaning solutions and debris.
Work in a well-ventilated area to avoid inhaling harmful fumes from cleaning products. Opening garage doors or working outdoors provides adequate ventilation.
If using commercial cleaners, read all warning labels carefully. Some products contain harsh chemicals that require additional precautions like respiratory protection.
Required Tools and Materials
Cleaning Supplies:
- Mild soap or motorcycle-specific cleaner
- Microfiber cloths (for applying cleaner and final polishing)
- Soft-bristled brush
- Metal polish (appropriate for your exhaust type)
- Bucket of warm water
- Spray bottle for application
Specialized Tools:
- Copper brush (for stubborn carbon deposits)
- Fine wire wool (#0000 grade) for stainless steel exhausts
- Rubber gloves (chemical resistant)
- Old toothbrush for hard-to-reach areas
Keep separate microfiber cloths for cleaning and polishing to avoid cross-contamination. Microfiber cloths are ideal because they won’t scratch the exhaust surface.
Pre-Cleaning Inspection
Examine the exhaust system for any damage or loose parts. Check mounting brackets, gaskets, and fasteners for security and wear.
Look for rust spots, discoloration, or carbon buildup to determine which cleaning methods will be most effective. Different problems require different approaches.
Take photos of severe problem areas to compare before and after results. This helps track your progress and effectiveness of cleaning methods.
Test any cleaning product on a small, inconspicuous area first. This prevents potential damage to the entire exhaust system.
Identify the material of your exhaust pipes. Different materials like stainless steel, titanium, or carbon fiber require specific cleaning approaches to avoid damage.
Cover nearby painted or sensitive parts with tape or cloth to protect them from harsh cleaning chemicals.
Cleaning Motorcycle Exhaust Pipes: Step-by-Step
Properly cleaning your motorcycle exhaust pipes not only improves the appearance of your bike but also helps maintain optimal engine performance. Regular cleaning prevents buildup that can restrict airflow and reduce efficiency.
Initial Rinse and Debris Removal
Begin by ensuring your exhaust is cool to the touch. Hot pipes can cause cleaning solutions to evaporate too quickly and may present a burn hazard.
Rinse the exhaust pipes thoroughly with water to remove loose dirt and debris. This prevents scratching the surface during deeper cleaning stages.
Use a soft brush to gently dislodge any stuck-on dirt or road grime from the exterior. Pay special attention to hard-to-reach areas where debris often accumulates.
For the interior of pipes, a round brush designed for exhaust cleaning works effectively to dislodge larger dirt deposits without damaging the inner surfaces.
After brushing, rinse again to wash away the loosened debris. This initial cleaning provides a better foundation for the more detailed cleaning steps to follow.
Using Soap and Water for Routine Cleaning
For regular maintenance cleaning, a solution of mild dish soap and warm water is often sufficient. Mix a few drops of dish soap in a bucket of warm water.
Dip a microfiber cloth or soft sponge into the soapy solution and thoroughly wipe down the exterior of the exhaust pipes. Work in small sections to ensure thorough cleaning.
For chrome or stainless steel exhausts, move in the direction of the grain to avoid creating micro-scratches that can dull the finish over time.
Rinse thoroughly with clean water after washing to remove all soap residue. Soap left behind can cause spotting when the pipes heat up during riding.
Dry the pipes completely with a clean, soft cloth to prevent water spots. Pay special attention to crevices and joints where water might collect.
Effective Degreasing Methods
For exhausts with heavy oil or grease buildup, a dedicated motorcycle exhaust cleaner or degreaser provides more cleaning power than soap alone.
Apply the degreaser according to product instructions, typically spraying directly onto the affected areas. Allow it to work for the recommended time without drying out.
Important safety note: Always use degreasers in a well-ventilated area and wear protective gloves to avoid skin irritation.
For stubborn grease, a soft-bristled brush can help work the degreaser into the contaminated areas. Avoid abrasive brushes that might scratch the finish.
After degreasing, rinse thoroughly with clean water and dry completely. Some degreasers may leave a film if not properly rinsed away.
Dealing with Stubborn Contaminants
For exhausts with rust, oxidation, or baked-on carbon deposits, more aggressive cleaning methods may be necessary.
A mixture of baking soda and water creates an effective paste for removing rust and carbon buildup. Apply the paste to affected areas and gently scrub with a non-abrasive pad.
For extremely stubborn deposits, some riders use specialized products like oven cleaner, but this should be used cautiously as it can damage some finishes. Test on a small, inconspicuous area first.
White vinegar can effectively break down rust. Soak a cloth in vinegar and wrap it around rusted areas for 30-60 minutes before scrubbing and rinsing.
After treating stubborn contaminants, apply a light coat of high-temperature silicone spray or specialized exhaust protectant to help prevent future buildup and maintain optimal performance.
Removing Carbon Build-Up and Burn Marks
Carbon buildup and burn marks are common issues that affect motorcycle exhaust systems, compromising both performance and appearance. These deposits can be effectively removed using the right techniques and materials.
Addressing Carbon Buildup
Carbon buildup occurs when unburned fuel particles accumulate in the exhaust system over time. This buildup can restrict exhaust flow and reduce engine performance. To remove carbon deposits, start by ensuring the exhaust is completely cool.
For moderate buildup, use a specialized exhaust cleaner that breaks down carbon deposits. Apply the cleaner according to the manufacturer’s instructions and let it sit for the recommended time.
For stubborn deposits, a steel scrub pad can be effective. Gently scrub the affected areas in a circular motion, being careful not to damage the finish.
Some riders use mild acids to dissolve carbon buildup. Warning: Products containing hydrochloric acid should be used with extreme caution and proper ventilation. Certain toilet cleaners contain mild acids that can work, but always test on a small area first.
Treating Burn Marks on Exhaust
Burn marks appear when extremely hot exhaust gases cause the metal to discolor. These marks are more common on chrome or polished exhausts.
To address burn marks:
- Clean the area thoroughly with soap and water
- Dry completely with a microfiber cloth
- For stubborn marks, apply a specialized exhaust cleaner
For particularly resistant burn marks, oven cleaner can be effective as a quick fix. Apply it carefully, avoiding contact with other motorcycle components, and rinse thoroughly afterward.
Remember that burn marks on titanium exhausts may be impossible to remove completely as they represent actual changes to the metal’s surface.
Application of Metal Polish
Metal polish is essential for restoring shine and removing oxidation from exhaust systems. Choose a polish specifically formulated for your exhaust material (chrome, stainless steel, titanium, etc.).
Apply a small amount of metal polish to a clean microfiber cloth. Work in small sections using circular motions with moderate pressure. For textured areas, use a soft-bristled brush to work the polish into crevices.
For optimal results:
- Work from top to bottom
- Apply polish in thin, even layers
- Allow polish to dry to a haze before buffing
- Use a clean microfiber cloth for final buffing
Quality metal polishers not only remove surface contaminants but also leave a protective layer that helps prevent future carbon buildup and oxidation.
Rust Removal and Prevention
Rust is one of the biggest enemies of your motorcycle’s exhaust system. Left untreated, it can destroy both the appearance and functionality of your pipes, leading to expensive repairs or replacements.
Identifying and Dealing with Rust
Rust typically appears as reddish-brown spots or patches on metal surfaces. On exhaust pipes, it often starts in areas where moisture collects or where the protective finish has been damaged.
For light surface rust, you can use a simple DIY method:
- Scrub gently with crumpled aluminum foil dipped in white vinegar
- Wipe clean with a microfiber cloth
- Apply a thin coat of heat-resistant oil
For moderate rust, try these steps:
- Clean the area thoroughly
- Apply vinegar and let it sit for several hours
- Scrub with steel wool (0000 grade) or a wire brush
- Rinse and dry completely
Severe rust may require professional help or replacement parts, especially if the metal has begun to pit or flake.
Using Rust Removers and Inhibitors
Commercial rust removers offer powerful solutions for stubborn problems. Look for products specifically designed for motorcycle exhausts, as they can withstand high temperatures.
When selecting a rust remover, consider these options:
- Chemical removers (contain phosphoric or oxalic acid)
- Gel formulations (good for vertical surfaces)
- Electrolysis kits (for complete parts removal)
Apply the product according to manufacturer instructions. Most require application, waiting time, and thorough rinsing.
After removing rust, rust inhibitors create a protective barrier against future oxidation. These come in spray, liquid, or paste forms and typically contain zinc compounds or other corrosion-fighting chemicals.
For best results, apply inhibitors to completely clean and dry metal surfaces. Remember that some products need heat curing to be fully effective.
Protecting Exhaust Pipes Against Future Rust
Prevention is always easier than cure when it comes to exhaust rust. Regular maintenance makes a significant difference in keeping your pipes rust-free.
Effective preventive measures include:
- Wipe pipes with a clean cloth after every ride, especially in wet conditions
- Apply a thin coat of high-temperature silicone spray or specialized exhaust protectant
- Consider ceramic coating for maximum protection
For stored motorcycles, use a breathable cover and consider using moisture-absorbing products in your garage. Avoid plastic covers directly on exhaust components as they can trap moisture.
Regular inspection is essential. Check your exhaust system monthly for early signs of rust formation. Pay special attention to welds, joints, and areas where water might collect.
For chrome exhausts, specialized chrome cleaners and polishers help maintain the protective layer that keeps oxygen away from the metal underneath.
Cleaning Different Types of Exhaust Finishes
Different exhaust materials require specific cleaning methods to maintain their appearance and function. The right approach prevents damage while restoring the finish to its original glory.
Maintaining Stainless-Steel Pipes
Stainless-steel exhausts are popular for their durability but require proper maintenance to prevent discoloration. When cleaning, always ensure the pipes are completely cool to avoid burns.
For regular cleaning:
- Use a motorcycle-specific cleaner or mild soap with water
- Apply with a soft microfiber cloth, moving in the direction of the grain
- Rinse thoroughly and dry immediately to prevent water spots
For bluing or discoloration:
- Apply a dedicated stainless steel exhaust cleaner
- Use fine #0000 steel wool for stubborn stains, working gently
- Buff with a clean cloth until shiny
Finish with a thin layer of protective wax specifically designed for exhausts. This creates a barrier against moisture and road debris.
Care for Chrome Pipes
Chrome exhausts deliver that classic shine but are more susceptible to pitting and corrosion. Regular maintenance prevents costly replacements.
Start by removing surface dirt with warm water. For deeper cleaning:
- Use a chrome-specific cleaner without abrasives
- Apply with a soft cloth using circular motions
- Avoid acidic cleaners that can damage the finish
For light rust spots:
- Try aluminum foil dipped in water or cola
- Rub gently over affected areas
- The chemical reaction removes rust without scratching
Black chrome pipes require extra care. Enthusiasts recommend using specialized cleaning products designed for black finishes rather than standard chrome cleaners which may damage the coating.
After cleaning, apply a thin coat of motorcycle-specific chrome protectant. This helps maintain the shine and protects against environmental damage.
Reassembly and Final Inspection
After thoroughly cleaning your motorcycle exhaust system, proper reassembly ensures optimal performance and prevents damage. The following steps will help you correctly reattach components and verify everything is in working order.
Reattaching Heat Shields and Accessories
Start by inspecting all mounting hardware for damage or wear. Replace any rusted or stripped bolts before reassembly.
Apply a thin layer of anti-seize compound to the threads of all bolts to prevent future corrosion. This is especially important for exhaust hardware that experiences extreme temperature changes.
When reinstalling the heat shield, align all mounting holes carefully before inserting bolts. Tighten in a cross pattern, similar to tightening wheel lug nuts, to ensure even pressure distribution.
Do not fully tighten any single bolt until all are started. This allows for adjustments if needed during the reassembly process.
Use a torque wrench to tighten all fasteners to manufacturer specifications. Over-tightening can strip threads or crack components, while loose fasteners may cause rattling or component failure.
Final Check for Cleanliness and Security
Wipe down the entire exhaust system with a clean, lint-free cloth to remove any fingerprints or cleaning residue. These can burn onto the surface when heated.
Verify all mounting brackets are secure and properly aligned. The exhaust should not make contact with any other motorcycle components.
Inspect all gaskets and seals for proper seating. Any gaps could lead to exhaust leaks that reduce performance.
Test all accessories, such as removable baffles or adjustable features, to ensure they operate smoothly after cleaning.
Start the motorcycle and listen for any unusual sounds. Check for exhaust leaks by holding your hand (at a safe distance) near connection points to feel for escaping gases.
Exhaust System Maintenance Schedule
Following a consistent maintenance schedule keeps your motorcycle’s exhaust system in peak condition and prevents costly repairs. Regular care extends the life of your exhaust while maintaining optimal performance.
Recommended Cleaning Frequency
For daily riders, a thorough cleaning of your exhaust system should be performed every 2-3 months. Weekend riders can extend this to every 4-6 months. However, riders in coastal areas or regions with harsh winters should clean more frequently due to increased salt exposure.
After long rides, it’s advisable to wipe down the exhaust once the system has completely cooled. This prevents buildup of road grime and corrosive materials.
Seasonal Cleaning Schedule:
- Spring: Deep clean after winter storage
- Summer: Regular wipe-downs after rides
- Fall: Thorough cleaning before winter
- Winter: Apply protective coating if storing the motorcycle
For chrome exhausts, polishing should be done every 1-2 months to prevent discoloration. Titanium and stainless steel systems require less frequent polishing but benefit from regular cleaning.
Ongoing Inspection and Upkeep
Routine inspection should be performed monthly, checking for signs of rust, corrosion, or loose fittings. Pay close attention to mounting brackets and gaskets, which often deteriorate first.
Listen for changes in exhaust note during rides—unusual rattling or excessive noise often indicates loose components or developing cracks. Check for exhaust leaks by looking for black sooty deposits around seams and joints.
Key inspection points:
- Exhaust gaskets (replace yearly)
- Mounting brackets (tighten quarterly)
- Welds and seams (inspect monthly)
- Baffle condition (check semi-annually)
Apply a thin coat of high-temperature silicone spray to the exterior after cleaning to repel water and contaminants. This creates a protective barrier that extends periods between deep cleanings.
For carbon fiber components, use specialized cleaners and avoid abrasive materials that might damage the finish.
Impact of a Clean Exhaust on Motorcycle Performance
A well-maintained exhaust system is crucial for your motorcycle’s overall performance. Keeping your exhaust clean affects everything from power output to fuel consumption and even safety aspects of your ride.
Enhancing Engine Performance
A clean exhaust system significantly improves your motorcycle’s engine performance. When exhaust pipes accumulate carbon buildup, they restrict the flow of exhaust gases, creating back pressure that forces the engine to work harder than necessary.
This restriction prevents proper air exchange in the combustion chamber, leading to reduced power output. Riders often notice sluggish acceleration and decreased top-end performance when exhausts are dirty.
Regular cleaning removes these carbon deposits and restores proper exhaust flow. This allows the engine to “breathe” more efficiently, resulting in more responsive throttle action and better power delivery throughout the RPM range.
For high-performance motorcycles, this difference can be particularly noticeable in mid-range torque and high-RPM power. Clean exhaust systems help maintain the manufacturer’s intended performance specifications.
Improving Fuel Efficiency
Dirty exhaust systems force engines to consume more fuel than necessary. When exhaust flow is restricted, the engine computer may compensate by adjusting the fuel mixture, typically resulting in a richer (more fuel) condition.
This inefficient combustion wastes fuel and decreases mileage. Riders might notice more frequent refueling stops and higher operating costs.
Regular exhaust cleaning can improve fuel economy by 5-10% in severely affected motorcycles. This efficiency gain comes from the engine’s ability to operate closer to its designed parameters.
The savings might seem small on individual rides, but they accumulate significantly over thousands of miles. For touring riders who cover long distances, this improved efficiency translates to extended range and fewer fuel stops.
Reducing Harmful Emissions
Clean exhaust systems help motorcycles burn fuel more completely, reducing harmful emissions. Excessive carbon buildup can lead to incomplete combustion, which increases carbon monoxide and unburned hydrocarbons in exhaust gases.
These pollutants not only harm the environment but may also cause a motorcycle to fail emissions testing in regions with strict regulations. Regular exhaust maintenance helps ensure compliance with environmental standards.
Modern motorcycles with catalytic converters are particularly sensitive to exhaust system condition. A clean exhaust helps the catalytic converter function properly by ensuring optimal exhaust gas temperature and composition.
Reduced emissions also mean less visible smoke from the exhaust, which is especially important for maintaining aesthetic appeal and avoiding unwanted attention from authorities monitoring vehicle emissions.
Minimizing Backfiring and Exhaust Leaks
A clean exhaust system helps prevent dangerous backfiring and potential exhaust leaks. Carbon buildup can create hot spots in the exhaust that may ignite unburned fuel, causing loud backfires that can damage the system.
These backfires are not just annoying—they can crack exhaust components and damage internal baffles. Regular cleaning removes carbon deposits that contribute to these irregular combustion events.
Exhaust leaks develop more easily in systems with excessive carbon buildup. The extreme temperature variations in dirty systems can cause metal fatigue and eventual cracking or seal failure.
Besides creating unpleasant noise, exhaust leaks pose serious safety concerns. They can direct hot gases toward vulnerable components or the rider, potentially causing burns or component failures. Regular cleaning and inspection help identify potential leak points before they become serious problems.
Frequently Asked Questions
Motorcycle exhaust maintenance involves specific cleaning methods, suitable products, and regular care routines that affect both performance and appearance. These common questions address key aspects of keeping your exhaust system in optimal condition.
What is the recommended procedure for cleaning the inside of a motorcycle exhaust pipe?
Cleaning the inside of motorcycle exhaust pipes requires attention to detail and proper technique. Start by allowing the exhaust to cool completely to avoid burns or damage.
Remove the exhaust pipe from the motorcycle if possible, as this provides better access to the interior surfaces. If removal isn’t feasible, work with the pipe attached.
Use a round brush designed for exhaust cleaning to dislodge larger dirt deposits inside the pipe. Insert the brush and rotate it while pushing through the pipe.
For stubborn carbon buildup, create a solution of warm water and degreaser. Pour this mixture through the pipe and let it sit for 15-20 minutes before flushing with clean water.
Which products are considered the best for cleaning motorcycle exhaust systems?
Specialized motorcycle exhaust cleaners like Meguiar’s, S100, and Mothers Mag & Aluminum Polish are highly effective for most exhaust materials. These products are formulated to remove carbon deposits without damaging metal surfaces.
For stainless steel exhausts, vinegar serves as a safe, mild acid that effectively removes stains and light oxidation. Mix equal parts white vinegar and water for best results.
Aluminum polishes work exceptionally well for chrome and aluminum exhaust components, restoring shine while removing surface contaminants. Apply with a microfiber cloth for best results.
Can WD40 be safely used for cleaning motorcycle exhausts, and if so, how?
WD40 can be used safely on motorcycle exhausts as a temporary cleaning solution. Spray a moderate amount onto a clean cloth rather than directly on the exhaust surface.
Wipe the exhaust thoroughly with the WD40-dampened cloth, focusing on areas with visible grime or light rust. The product helps dissolve oil-based contaminants and provides temporary protection.
After applying WD40, buff the exhaust with a clean, dry microfiber cloth to remove excess product. Note that while WD40 provides temporary results, it doesn’t replace proper polishing for long-term maintenance.
How can one effectively clean and maintain the outside of a motorcycle exhaust pipe?
Start by washing the exterior with warm, soapy water to remove surface dirt and road grime. Use a soft sponge or microfiber cloth to avoid scratching chrome or polished surfaces.
For chrome exhausts, apply a quality chrome polish using circular motions, then buff to a shine with a clean, dry cloth. This maintains the appearance while providing protection.
Address rust spots by gently rubbing with fine steel wool (0000 grade) followed by polish application. For titanium or carbon fiber exhausts, use cleaners specifically formulated for these materials.
Apply a heat-resistant sealant after cleaning to protect the finish and make future cleaning easier. This extra step helps prevent discoloration and oxidation from heat cycles.
What are the steps for using Harpic to clean a motorcycle exhaust, and is it safe?
Using Harpic toilet cleaner on motorcycle exhausts requires caution as it contains strong acids. Dilute Harpic with equal parts water before application to reduce its corrosive properties.
Apply the diluted solution only to stainless steel exhausts using a cloth, and limit contact time to under five minutes. The acid helps remove stubborn carbon deposits and discoloration.
Thoroughly rinse the exhaust with plenty of clean water immediately after application. Follow with a neutralizing solution of baking soda and water to stop any lingering acid activity.
Harpic should never be used on chrome, aluminum, or titanium exhausts as it can cause permanent damage. For these materials, stick to purpose-made motorcycle exhaust cleaners.
What routine maintenance tips should be followed to ensure the longevity of a motorcycle’s exhaust system?
Clean your exhaust every 2-4 weeks or after long rides to prevent stubborn buildup. Regular maintenance is easier than tackling heavy accumulation.
Apply a heat-resistant sealant or polish after cleaning to create a protective barrier against moisture and road salts. This significantly reduces corrosion risk, especially in humid climates.
Inspect exhaust mountings and gaskets regularly for signs of wear or leakage. Tighten loose hardware promptly to prevent exhaust movement that could cause damage to the system.
Address any unusual sounds or performance changes immediately, as these often indicate exhaust leaks or internal blockages. Early intervention prevents more extensive damage to both the exhaust and engine.
