The ornamental design for a motorcycleengineoildipstick, as shown and described.
FIG. 1 is a perspective view of an ornamental design of a motorcycle engine
oil dipstick according to our invention, all other side views being
identical;
FIG. 2 is a top view thereof;
FIG. 3 is a side view thereof, the front and rear views being identical
thereto; and,