Hello there

I have a 1997 C280 Sport and I have few questions about the oil change DIY.

1. where is the oil drain plug and oil filter located exactly ?

2. I want to use synthetic oil in my engine, but what grade should I use ? differences between 10W-40 and 15W-40 ?

3. my maintenance booklet says that it needs to "Reset Maintenance Service Reminder" when oil is changed. How do I perform this task ?

4. where can I find the oil filter socket or wrench to remove the oil filter ?

thank you very much