Trans fluid ?
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Elder User
Joined: Nov 2005
Posts: 788
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From: Cottage Grove, Minnesota
Trans fluid ?
Hey guys I am thinking about replacing the fluid in my truck. I have a 97 F150 4.6 w/ the 4R70W trannsmission. I have read that you can use Mercon V in place of the Mercon on the older ones like mine. I am just a little leary of doing this since my truck has 183000mi and don't want to ruin the tranny. Will the Mercon V do any damage if it is all replaced?
Freshman User
Joined: Dec 2004
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Ford released a chart on which fluid you should use, and it clearly indicates that a 97 4R70W should use Mercon.
Many companies trans fluid is compliant to more than one standard. Many I saw when changing mine claimed to be Dex III/Merc and Merc V. Those I would say are safe to use. If its only claims to be one, I would definitly make sure that it is Merc and not Merc V.
Many companies trans fluid is compliant to more than one standard. Many I saw when changing mine claimed to be Dex III/Merc and Merc V. Those I would say are safe to use. If its only claims to be one, I would definitly make sure that it is Merc and not Merc V.
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Elder User
Joined: Nov 2005
Posts: 788
Likes: 0
From: Cottage Grove, Minnesota
Thanks for the info. In one of the tech articles on the site here it says it is safe to use Mercon V on older 4R70W's that were factory filled with Mercon. I noticed that my dipstick says use Mercon only.
