Oil Change

What is your question?

I have only driven the car, at very slow speed, for about 4,000 miles in the last 2 years. I had it serviced at a Porsche dealer before moving. I moved overseas and brought the car with me and now am wondering if I need to change the oil or can wait for a few more miles. It has about 41,967 miles now and had about 38,000 when I got it. The oil is still very clear.