Sorry about another thread but I figured since its slow at work I should ask. I'm wondering what services/ things I should check on my 1992 mercedes s 600 143,000 this week.

I know Im going to take it to get an oil change( i might do it myself) I know the only thing is that you have to make sure when changing the oil filter you dont double gasket the filter by leaving the old one on there.
I cant remember what tools we used when doing mercedes ( when i worked at a oil and lube place)

what other services quick fix things should I change or check this week?

I was thinking maybe check the coolant? And a few other things, where can I find certain charts or similiar things that will tell me at certain mileage I should do x,y, and z?