What is the best fluid
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Darn near anything for the transfer case... If you plan to fill it and forget it for eternity a full syn fluid would do the trick. Mobil 1, Royal Purple, Amsoil etc.
IMHO the Ford Transfer Case fluid is actually Mercon/Dexron III but they won't/can't call it that.
And the bigger mystery is Ford still doesn't recommend Mercon V for the T/C for whatever reason.
Back in my fleet days all Ford T/C's and power steering systems were serviced with Shell Donax TD hydraulic fluid.
Josh
IMHO the Ford Transfer Case fluid is actually Mercon/Dexron III but they won't/can't call it that.
And the bigger mystery is Ford still doesn't recommend Mercon V for the T/C for whatever reason.
Back in my fleet days all Ford T/C's and power steering systems were serviced with Shell Donax TD hydraulic fluid.
Josh
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