When you pull the pan, be sure to check out the rear seal. It's beginning to sound like it's tightening up after a few minutes of running time. There should be some discoloration of the seal and/or the crankshaft surface where the seal runs if it's gotten tight enough to seize the engine up.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!