FX4 Is Differential Fluid change any different if you have the locker.

[johnitahoe]

FX4 Is Differential Fluid change any different if you have the locker? Thanks, John

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[RangerBill]

FX4 Is Differential Fluid change any different if you have the locker? Thanks, John

Check the owner's manual for the correct lube. It is listed there.

 

[redneck wrencher]

Both call for 80W-90 Premium Gear Oil. Capacity is 1.7 qts for Locking vs 1.9 for Standard.

 

[baloo2650]

Nope, nothing special. Just drain and fill until you get fluid at the fill port.

 

[JACKSMYDOG]

Pro tip - Always remove the fill plug before the drain plug. ALWAYS, EVERY TIME!!!!

 

[Stevedbvik1]

Pro tip - Always remove the fill plug before the drain plug. ALWAYS, EVERY TIME!!!!

That’s if you have a drain plug.

 

[JACKSMYDOG]

That’s if you have a drain plug.

Of course you can't remove something that's not there, but even if you don't have a drain plug and have to separate the case, always remove the fill plug before you do that.

Or in more basic terms, always remove the fill plug before you drain the fluid.

 

[TruckBox]

That’s if you have a drain plug.

Everyone has a drain plug. Some just get to have a hole for it beforehand.

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