I have a 1995 300D E class. Every time I go up to highway speed the oil light goes on and stays on. I've checked the oil level many times and Its right at full. Do I need to replace the oil sensor on the oil pan or is it something else? Please help!

I'm a idoit when the idoit light is on!

Tom L.
1995 300 D E-Class
142,000 miles going strong
Spring Lake, MI