Pan drop on my 2003 Grand Marquis at 38k miles. New Motorcraft filter, 7 quarts ( I let it drain for 2 days ) of Castrol Mercon V and a new ATP pan w/ drain plug. Fluid looked good, so I am stopping here and will change again after 40-50k miles. The new ATP pan was a little deeper than the original, giving an extra 1/2-3/4 quart capacity and I highly recommend it.
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