Dustin, congratulations on your recent purchase. Appears to be a well-maintained MB automobile.

Regarding Item 5: recommend changing all fluids (brake fluid, coolant, oil, differential, power steering and transmission fluid) and filters (oil, power steering and transmission). Be sure to use either MB coolant or Zerex G-05 at a 50/50 mix.

Regarding Item 6: There is a chart in your Owner's Manual that provides guidance for oil weight, and the Maintenance Booklet likely recommends oil/filter changes every 7,500 miles. Factory fill for that vintage engine was 15W40 mineral oil or you can switch to Mobil 1 15W50 ... that's what I run in our engines of that vintage. Mobil 1 has swell agents to prevent gasket/seal leakage so disregard the horror stories about Mobil 1 causing leaks in older engines that previously used only mineral oil.

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Fred Hoelzle