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4R100 Drain Plug?

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Old 05-21-2004, 05:08 PM
Join Date: Nov 2003
Location: Panama City, FL
Vehicle: 1999 Ford F150
Posts: 92
4R100 Drain Plug?

My Brother-in-law just bought a '99 F-250 with the 5.4 and
(I'm assuming) the 4R100W trans.

Does the -100 have the T/C drain plug like the -70 does?

Secondly, I assume the use of MERCON V is recommended?

While I'm posting, are there any F-250 specific issues he needs to know about? I'm very familiar with most of the F-150 problems, as my '99 is a poster child for most of them.

Thanks, all!

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Old 05-22-2004, 03:39 PM
Senior Member
Join Date: May 2000
Posts: 4,761
The 4R100 takes Mercon and has a torque convertor drain plug up until the build date 8-11-2001. Don't use Mercon V.
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