I did a quick google search and what I came up with is Pentosin ATF. It's a yellow color and Pentosin says it's for our MB transmission. I've had shifting problems from low fluid, unfortunately I can't tell you what high fluid levels shift like. Look at and smell the fluid, if it's not milky (water contamination) or smells burnt the fluid is still good. If you see foam or bubbles it may be overfilled. My thoughts are that if grossly overfilled you wouldn't have lasted 45,000 miles. If positive it's too full, the fluid looks and smells normal, use a long clear hose and suck some out.

Les