I am slowly reading the data online and believe the eureka moment is near at hand. By that I mean a figure of 392F is appearing as the "Creep" point (no joke as you engineer types know). Aluminum castings ( I looked at casting alloy A 242) begin to stretch , distort and crack. Poor little tractor must have seen that temp a lot. That's why I'm interested in the K thermocouple. If the sump oil was really at 300 F, can 392 F in the head be far away? Is that the dirty little secret an average consumer cannot know? If so, you the consumer are walking a very narrow reliability path.
OK I put on my armor. Let's hear it. :laughing: