Mercon ATF same as Dexron III?

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Mikepier - 22 Apr 2006 04:48 GMT

I was looking to change the fluid in my transfer case soon on my 99 XLT
SOHC. The owners manual says use Mercon ATF. The local auto store here
only sells Citgo Transguard ATF Dexron III/ Mercon. I am assuming they
are the same?

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Larry - 22 Apr 2006 15:46 GMT

Does it need Mercon or Mercon V? Mercon V is different. Mercon IV or
earlier is the same as Dexron. Found this out with my auto trannny.

.....Larry

> I was looking to change the fluid in my transfer case soon on my 99 XLT
> SOHC. The owners manual says use Mercon ATF. The local auto store here
> only sells Citgo Transguard ATF Dexron III/ Mercon. I am assuming they
> are the same?

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Mikepier - 22 Apr 2006 15:53 GMT

My tranny takes Mercon V, but for the transfer case the owners manual
says regular Mercon.

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Fred 2 - 22 Apr 2006 17:11 GMT

Just an FYI

Mercon V was designed to improve friction material stability, prevent
torque converter clutch chatter and lower overall operating
temperature, including shift temperature.

Ford transmissions that require Mercon V (much like Chrysler and Honda
transmissions that require HFM fluid) are part of an integral
transmission/transmission fluid calibration package.

The transmission has special friction materials that require Mercon V,
while the transfer case apparently does not and only needs Mercon.

>My tranny takes Mercon V, but for the transfer case the owners manual
>says regular Mercon.

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