Bringing a classic 1998 Mercedes Benz Sl500 back to life after a period of inactivity requires a methodical approach to ensure its reliability and performance. Fortunately, the later M119 engines found in these models, particularly those with coil-on-plug ignition, are generally robust, avoiding some of the distributor issues seen in earlier iterations. This inherent strength is a great starting point when recommissioning your SL500.
The first crucial step is to address all the vital fluids. A comprehensive fluid service is paramount, including engine oil, coolant, brake fluid, transmission fluid, differential fluid, power steering fluid, and hydraulic fluid for the convertible roof system. Alongside fluids, replace all filters – oil, air, transmission, cabin air, and fuel filters. Don’t overlook the spark plugs; the M119 engine utilizes eight. While performing these tasks, inspect for potential leaks, and be prepared to replace valve cover gaskets, a common maintenance item on engines of this age, as well as any brittle rubber breather hoses. Removing the valve covers also presents an excellent opportunity to inspect the timing chain guides and other plastic components within the engine for wear or degradation.
Given the age of the vehicle, and especially if the radiator appears original, consider preemptive replacement in the near future. This is particularly important if you intend to use the car regularly after its period of storage, as a radiator failure can lead to overheating and significant engine damage.
As noted, inspecting and potentially replacing the driveshaft flex discs is another critical area. These components are subject to wear and tear over time and are essential for smooth power delivery.
Gathering information about any maintenance performed by the previous owner is invaluable. Understanding the car’s service history, both through personal records and mechanic invoices, can help prioritize maintenance tasks and avoid redundant work.
Realistically, a 1998 Mercedes Benz SL500, given its age, is likely due for some level of suspension overhaul. Inspect bushings, mounts, and other suspension components for wear and tear. The more suspension work that has been done in the last five years, the better. However, it’s not uncommon for many of these components to still be original, even on higher mileage examples.
Finally, ascertain how many keys accompany the vehicle. Having multiple keys is always advantageous for convenience and security.
Owning and maintaining a 1998 Mercedes Benz SL500 can be a rewarding experience. These cars are enjoyable to drive and, with diligent preventative maintenance, can remain reliable classics for years to come.
The interior condition appears to be well-preserved, and the exterior is also in good shape. Addressing the minor bumper and quarter panel imperfections will further enhance the car’s presentable condition and overall appeal.
