• The six M8 bolts which were placed in the center of the upper oil pan have been eliminated.
• Additional strength has been cast into the upper oil pan.
• An upper oil pan which has bolt holes present should always be assembled with the six specified M8 bolts. Failure to do so will result in a vibration related noise caused from the upper oil pan vibrating against the bed plate.
• An upper oil pan which has had the bolt holes eliminated, can be utilized as a service part to replace the earlier part.
