Congratulations on becoming the proud owner of a Mercedes-Benz 560sl! Often hailed as one of the finest cars Mercedes ever crafted, the 560SL offers a blend of classic design and robust engineering. If you’ve recently acquired one of these iconic vehicles, especially on the used market, you’re in for a treat. However, like any classic car, understanding potential maintenance needs is crucial to enjoying your 560SL to its fullest. This guide will walk you through common issues and essential maintenance points to keep your 560SL running smoothly for years to come.
Understanding Your Used 560SL
Many 560SL models available today have lived interesting lives. Purchased new by discerning owners who often used them as weekend cars or seasonal vehicles, many boast relatively low mileage for their age. While low mileage is generally a plus, it’s important to remember that time itself takes a toll on vehicles, especially those from the 1980s. Luxury cars of this era, like the 560SL, were built to high standards, but preventative maintenance and addressing age-related issues are key to their longevity.
It’s also worth noting the typical life cycle of luxury vehicles. Owners who bought these cars new often adhered to maintenance schedules but might have traded them in when facing larger, more expensive repairs. This pattern means many used Mercedes-Benz vehicles, including the 560SL, enter the market around the mileage mark where certain components are due for replacement. Understanding this can help you anticipate and budget for necessary maintenance.
Common Maintenance Points for the 560SL
Based on common experiences with used 560SL models, here are key areas to inspect and maintain:
Engine Maintenance
The heart of your 560SL is its engine, and several areas deserve attention:
Valve Cover Gasket Leaks
Valve cover gasket leaks are a prevalent issue in older engines. Over time, the gasket material can dry out and crack, leading to oil leaks. Inspect your engine for signs of oil around the valve covers. Replacing the valve cover gaskets is a relatively straightforward maintenance task that can prevent more significant issues.
Valve Seals
Valve seals, similar to gaskets, can degrade with age and mileage. Leaking valve seals can lead to increased oil consumption and, in some cases, noticeable smoke from the exhaust, especially upon startup or deceleration. If you notice your 560SL is using more oil than expected, valve seals could be the culprit.
Head Gasket
While not every 560SL will experience head gasket issues, they are a potential concern in older vehicles. Head gaskets can develop leaks, sometimes externally visible, or internally, leading to coolant mixing with oil or combustion gases. Keep an eye on your engine temperature and coolant levels, and watch for any signs of coolant in the oil (milky residue on the dipstick) or vice versa.
Braking System
The braking system is critical for safety and performance. Pay attention to these brake components:
Brakes, Rotors, Pads, and Sensors
It’s generally recommended to replace brake rotors and pads rather than turning (resurfacing) the rotors on a 560SL. Inspect the brake pads for wear and consider replacing rotors and pads together for optimal braking performance. Brake pad wear sensors, if equipped, should also be checked and replaced as needed.
Cooling System
Maintaining a healthy cooling system is vital to prevent overheating and engine damage:
Monovalve
The monovalve, part of the climate control system, can fail over time, often due to prolonged exposure to coolant. A malfunctioning monovalve can lead to issues with heating and cooling inside the car. If you experience problems with your climate control, the monovalve is a potential point of inspection.
Radiator
Radiators in 560SLs often have plastic components that can become brittle with age. Many 560SLs on the market may have already had their radiators replaced. Check the condition of your radiator and be prepared to replace it if there are signs of leaks or age-related deterioration. Always use Mercedes-Benz approved coolant to maintain the integrity of the cooling system components.
Transmission and Drivetrain
Proper maintenance of the transmission and differential is essential for smooth operation and longevity:
Transmission Service
Automatic transmissions benefit significantly from regular fluid and filter changes. If the service history of your 560SL is uncertain, consider performing a transmission fluid and filter replacement. This can improve transmission performance and prevent future problems.
Differential Service
Similar to the transmission, the differential fluid should be changed periodically. While often overlooked, fresh differential fluid ensures proper lubrication and extends the life of the differential.
Other Important Checks and Services
Beyond the major systems, consider these additional maintenance points:
Radio and Audio
The original Becker radios in 560SLs of this era may not offer the features of modern systems. While the original speakers are generally of good quality, many owners choose to upgrade the head unit to a more modern system, such as a Blaupunkt or other aftermarket option, for improved sound and features.
Tires and Alignment
Tires are crucial for safety and handling. Replace any old or worn tires with quality tires. Michelin MX tires are often recommended for classic Mercedes models. After replacing tires, a professional wheel alignment, preferably using a Hunter alignment machine, is highly recommended to ensure optimal handling and tire wear.
Cooling System Flush
If you are unsure of the last time the cooling system was flushed, performing a complete coolant flush and refill is a good preventative measure. This helps remove old coolant and debris and ensures the system is filled with fresh, properly formulated coolant.
Dash Lights
Many 560SL owners find themselves needing to replace dashboard illumination bulbs. These bulbs can burn out over time. Fortunately, replacing them is a common DIY task, and resources are readily available online to guide you through the process.
Timing Chain
The timing chain and related components, such as chain guides, are vital for engine timing. While the timing chain itself is robust, the chain guides can wear down over time. If your 560SL has accumulated significant mileage, having the timing chain and guides inspected is a prudent step. For vehicles with over 100,000 miles, considering preemptive replacement of the timing chain and guides can provide peace of mind.
Fuel and Oil
Always use premium gasoline in your 560SL to ensure optimal engine performance. Regular oil changes are crucial. It’s recommended to change the engine oil and filter every 3,000 miles. The air filter should be replaced every other oil change to maintain good air intake quality.
Finding Reliable Service and Parts
Building a relationship with a trustworthy Mercedes-Benz mechanic is invaluable. Independent specialists can often provide expert service at more reasonable rates than dealerships. Seek recommendations and consider getting second opinions until you find a mechanic you trust. Online forums and owner communities are excellent resources for finding reputable mechanics and verifying information.
For parts, consider reputable suppliers specializing in Mercedes-Benz components. Online parts retailers and forum sponsors often offer competitive pricing and fast shipping.
Enjoying Your 560SL
Once you’ve addressed these key maintenance areas and established a routine for ongoing care, you can truly relax and enjoy the exceptional driving experience of your Mercedes-Benz 560SL. These cars are rewarding to own and drive, offering a unique blend of classic style and engineering. With proper maintenance, your 560SL will continue to provide years of driving pleasure.
And finally, a tip from a fellow enthusiast: consider using Zaino products for polishing and detailing your 560SL. Many find it to be an excellent choice for keeping the finish looking its best!
