[upstate engineer]

I'm approaching 150K miles on my SLK 230 and besides the usual items done every 30K, oil, filter, plugs, air filter, cabin filter, I've been wondering what other items I should address with respect to preventive maintenance. I've recently replaced both serpentine belts and changed the rear axle fluid and am planning to purge the brake lines and change antifreeze because it has been 2 years for those. I have a manual transmission so don't have to deal with the fluid/filter changes of the AT. So the items I'm wondering about the life expectancy are things such as main water pump along with all hoses, power steering pump, alternator, etc. So my question is at what mileage have such components had to be replaced? Any info would be greatly appreciated.

 

[Kirill]

you still should change MTX fluid, and don't forget fuel filter

 

[upstate engineer]

Thanks for the reminder on the fuel filter. I need to do that too. I has been 2 yrs since I last changed it. I have researched the MT fluid change but have found very little info and took a quick look the last time I had the slk on jack stands and the location of the drain and more important fill ports was not obvious.

 

[mkiv94tt]

Thanks for the reminder on the fuel filter. I need to do that too. I has been 2 yrs since I last changed it. I have researched the MT fluid change but have found very little info and took a quick look the last time I had the slk on jack stands and the location of the drain and more important fill ports was not obvious.

In regards to time or miles(5yrs or 60-90k miles) you should have already done or if not planned to do the following:

Timing belt (not sure if we have a timing chain), tensioner, idlers, cam & crank seal, water pump. Check for oil leaks around oil pan, front and rear main seals. Upper & lower radiator hose to include thermostat and coolant flush.

Hope that helps.
Dan