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CVT - fluid replacement service

(2006 Ford Five Hundred)
in Somersworth, NH on February 14, 2011
A Ford dealer said that the CVT fluid only needs to be changed ever 90,000 miles, but Ford's maintenance schedule appears to indicate a 60,000 mile drain interval...who is correct? Considering the cost of the change @ $200+, 90,000 miles would certainly be preferred. Also, how difficult is it to change the fluid...I was quoted around $10/qt and around $20 for the filter, so that would be a big savings.
The dealer said they use a special flushing machine for the CVT...is this true? I know this is true for regular transmissions...Thanks
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Popular Answer
on February 15, 2011
Flush method - same as other transmissions.

I am showing 60,000 miles for the fluid replacement interval on the CVT.

Also - When carrying out a fluid change interval, the installation of a new high-pressure case filter and seals is required.

This is different from the typical transmission pan and filter. Do not change that for the normal interval.

I know this is very confusing...to sum up:

Have the transmission fluid flushed with the appropriate CVT fluid at 60,000 mile intervals. Replace the high pressure case filter and seals at this time also concurrently.
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