The ornamental design for a motorcycleoilcooler, as shown and described.
FIG. 1 is a perspective view of a motorcycle oil cooler showing our new
design, it being understood that the broken lines are for illustrative
purposes only and form no part of the claimed design;
FIG. 2 is an enlarged front left side perspective view thereof; and
FIG. 3 is an enlarged rear right side perspective view thereof.