Lifetime Premium Member
Date registered: May 2006
Vehicle: 2001 E320 - Brilliant Silver/Ash: 107,000+
Location: West Virginia, USA
Mentioned: 0 Post(s)
Quoted: 6 Post(s)
1) Yes it could be a loose or corroded connection or socket, I have heard of this happening.
2) Synthetic oil will not hurt your car but you can't wait as long before changing it. If yours is designed for synthetic, which I'm pretty sure it is, I would feel more comfortable with synthetic. Check your owner's manual to verify, or ask on the W203 forum here.
Mercedes Benz - Das beste oder nichts!