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The big concern (if it really is a concern) about the 500 mile deal is the rear differential. What they are concerned about is somebody hitching to a heavy trailer and hitting the highway at 70+ mph for hours at a time before the differential is broke in. I don't think there is any real magic number that makes it safe, but for short trips especially at lower speeds I wouldn't sweat it.
You are right. I always change the diff oil at around 1000 miles just to get the metal out from break-in. JMO
tampa and 720deere...thanks for the info. i see a diff oil change in my future. I did a couple on my '04 following the FTE sticky directions that were so graciously posted in the tech folder.
Anyone changed it on their '11?