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2nd Generation
4r100 transmission fluid & filter change
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<blockquote data-quote="jaymz" data-source="post: 7862010" data-attributes="member: 2201"><p>I'll take a stab at this.</p><p></p><p>There is no Mercon III; it's Dexron III/Mercon, and is available just about anywhere: Wally World, etc., and it's cheap. That's what was originally spec'd in the Lightning, but Ford discontinued that stuff and reformulated it's Mercon so it works in all Ford Trannys (or so they claim). It's Mercon V.</p><p></p><p>As long as you know you have the Dexron III/Mercon in there, you could just drain the pan every spring and refill with 7 qts of Dexron. That keeps a fresh "recharge" in the trans. While you're at it, order a valve body, 4X4 drain pan and filter, and upgrade the fun factor, too.</p><p></p><p>Otherwise you need to do a flush, which is much easier at a shop because they get it all. You can drain the converter if you have a plug (they stopped using plugs in 2001 sometime).</p><p></p><p>Hope I have all this info correct, but someone should pop in and verify.</p><p></p><p>Jim</p></blockquote><p></p>
[QUOTE="jaymz, post: 7862010, member: 2201"] I'll take a stab at this. There is no Mercon III; it's Dexron III/Mercon, and is available just about anywhere: Wally World, etc., and it's cheap. That's what was originally spec'd in the Lightning, but Ford discontinued that stuff and reformulated it's Mercon so it works in all Ford Trannys (or so they claim). It's Mercon V. As long as you know you have the Dexron III/Mercon in there, you could just drain the pan every spring and refill with 7 qts of Dexron. That keeps a fresh "recharge" in the trans. While you're at it, order a valve body, 4X4 drain pan and filter, and upgrade the fun factor, too. Otherwise you need to do a flush, which is much easier at a shop because they get it all. You can drain the converter if you have a plug (they stopped using plugs in 2001 sometime). Hope I have all this info correct, but someone should pop in and verify. Jim [/QUOTE]
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4r100 transmission fluid & filter change
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