W116, Body and Interior Specific Aid

I've got a 1977 240D with a starter that won't turn (or do much of anything) when the key is turned. It will, however, start right up when I bridge the two screw terminals on the smaller cylinder on the starter assembly (solenoid?). I'm not too clear how exactly the starter motor works, so I'm looking for some help on what to look at/for. More, possibly relevant, info: Drove about 150 miles through 100+ degree heat. When I stopped for lunch, car exhibited above symptoms. Banged on large starter cylinder, car started with minimal fuss. After sitting in a driveway overnight and most of the next day, starter wouldn't turn at all (or even "click"). My friend suggested bridging the two screw terminals on the solenoid with a screw driver, and this started the engine right up.

Got a 240D '83. Great shape overall - but all (replace-over-repair) mechanics say I need all new suspension parts. I have replaced shocks with new bilsteins. Overall she rides fine thru bumps and dips, better than newer cars of non-German manufacture. Problem: Deep dips yield a creeky-klunk that sounds like it is coming directly from the passenger foot area - just where the track rod mount is anchored on the opposite side. Get this: barely noticable in the summer, it sounds really bad in the colder (non-freezing) weather...does this indicate anything clearly wrong?

Hi I'm a new MB owner of a 1974 240D automatic. Like all vehicle I buy I change the filters as soon as possible after purchase. I believe the oil filter canister would be behind the injecter pump on the driver side of the motor, but alas no oil canister. The previous owner told me that he had put in a newer used motor after the first one blew. It runs like a top and doesn't have any problems but can anyone tell me where the filter is located. ! Thank you for your advice and help. Troubled MB owner.