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Message: <blockquote data-quote="HiredHand" data-source="post: 4134472" data-attributes="member: 2469"><p>I was really surprised when I dropped the transmission pan on my BIL’s 08 F-150. He has almost 200k on the original fluid with no transmission issues. I know Ford has a really long fluid change interval on that transmission.  The fluid still looked good, the pan had very little of anything on the bottom, the magnet had some material on it, but nothing that looked worrisome. I know it was the original fluid because the dipstick plug was still in the bottom of the pan. I installed a new filter and added 5-6 Mercon V back. Now he doesn’t haul or tow anything, and never goes off road which may be why his fluid still looked so good.</p></blockquote><p></p>