PaulProe is right. On my Canton
oil pan there are two bungs. One on the top and in the front of the right wing for the dipstick, and one on the left, a little aft of center, on top of the wing, for the
oil temp sending unit. I haven't installed my engine yet, but that is a question I have asked myself. I will probably weld a new bung on the back of the
oil pan just to be sure the sender is in oil.