Transmission fluid help

[Darren]

Hey guys. Need help from some of you experts
This past weekend I installed new cooler lines on my 2010 F150 ( 4.6 140 KM)
So I thought I would drop the pan and replace fluid and filter.
Now a few days later I relize I put the wrong fluid in damit, I see now the truck calls for Mercon LV,
This is the fluid I used apparently only straight Mercon (picture).
I guess my question is can I pump the fluid out of pan and use correct fluid? Not sure how much will still be in rest of system...or should I have the system flushed..
Thanks for any advice.

 

[pishta]

Draining pan will only take ~3 qt of ATF out of a 8-10 qt system (727) . You need to get it flushed or have the trans guy pull the cooler line and run it while adding fluid until 9 comes out the line. Buddies F150 TOW takes 14qts! Your fluid was a Synth blend, the Mercon V is all synthetic.