So, you’ve got your hands on a 1998 Mercedes-benz Sl500, a true classic. Getting it running smoothly after a period of inactivity requires some essential maintenance. Thankfully, the later M119 engines in these models, equipped with coil-on-plug ignition, are generally robust, avoiding the distributor issues seen in earlier iterations. Let’s dive into the key areas to address to ensure your SL500 is ready for the road.
Engine and Fluid Overhaul
First things first, address all the fluids. A complete fluid replacement is crucial: engine oil, coolant, brake fluid, transmission fluid, differential fluid, power steering fluid, and hydraulic fluid for the convertible roof. Don’t forget the filters – oil filter, air filter, transmission filter, cabin filter, and fuel filter. While you’re at it, replacing the spark plugs is a good preventative measure, and the M119 engine only uses eight.
Valve cover gaskets are another common area to inspect and potentially replace, along with the small rubber breather hoses often found brittle with age. Removing the valve covers provides an excellent opportunity to inspect the timing chain guides and other plastic components within the engine for wear or degradation. Given the age, consider the radiator; if it appears original, factor in replacement in the near future, especially if you plan to use the car regularly.
Drivetrain and Suspension Checks
As mentioned, inspect the driveshaft flex discs (guibo joints). These are known wear items and should be replaced if any cracking or deterioration is evident. It’s also beneficial to understand the service history. Knowing what work the previous owner or their mechanic performed can save you from redundant tasks.
Realistically, cars of this era are due for suspension overhauls. Factor in inspecting and potentially replacing bushings, mounts, and other suspension components. While some parts might have been replaced within the last five years, many components could still be original. Even with higher mileage vehicles, original parts like flex discs and transmission mounts are frequently encountered, highlighting the potential age of components.
Keys and Overall Condition
Check how many keys come with the car; more keys are always a bonus. Overall, a 1998 SL500 can be a rewarding vehicle to drive and maintain yourself. The interior condition seems good, and the exterior is well-preserved. Addressing the rear bumper and the dent on the rear quarter panel will significantly enhance its presentation, making your 1998 Mercedes-Benz SL500 a truly standout classic.
