Tranny fluid
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Junior User
Joined: Nov 2004
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Tranny fluid
My truck calls for Mercon ATF. I couldn't find anything with just Mercon on it. It was either Dextron III/Mercon or Mercon V.
Is the dextron III/Mercon what I need or do I need to keep looking?
Is the dextron III/Mercon what I need or do I need to keep looking?
Postmaster
Joined: Mar 2001
Posts: 4,968
Likes: 3
From: So Cal
The DexronIII/Mercon will work fine. To get real Mercon, you need to check Ford Dealers. The Mercon V is not necessarily backward compatible to trannies using Mercon. Mercon is not upwardly compatible with Mercon V only trannies.
You can substitute one for the other but Mercon Mercon V do not meet respective spec for the trannies the work in.
Just use the Dexron III/Mercon. And cahnge regularly, some recommend as often as 12K. I do at 30K since I am lazy. Don't listen to the 100K advice some will give you.
Good Luck,
Jim Henderson
You can substitute one for the other but Mercon Mercon V do not meet respective spec for the trannies the work in.
Just use the Dexron III/Mercon. And cahnge regularly, some recommend as often as 12K. I do at 30K since I am lazy. Don't listen to the 100K advice some will give you.
Good Luck,
Jim Henderson
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