31 Spline Posi Unit (what lubricant?) Quick help please!

[UMDSmith]

I'm pretty sure its the explorer posi 31 spline unit. What is the recommended lubricant/fluid to use with it?

 

[BlownFiveLiter]

Whatever your stock fluid was. I'm not sure about the Explorer, but the F150 used a 31 spline variation of the very same Traction Lok in the Mustang.

 

[Duro5341]

get the friction modifier from Ford......$5.00
and get 1.7L of Hyporol Gear Lubricant.......80W-90......usually $6.00/L
These are canadian prices

Duro