This question is for my Jeep KJ and Dodge Truck. I rarely use the 4-wheel drive in my truck, and I typically change my rear diff fluid every 20,000 miles, so how often should I change my front differential lubricant if I rarely use 4-wheel drive?

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2015 Ram Ecodiesel/Big Horn/4x4/Quad Cab
2016 Arctic Fox 22G/Onboard 2500 LP Cummins Onan Generator/160 Watt Solar Panel

I took the road less traveled. Now I'm LOST.

axle shafts still turn and require slippery goodness even in 2wd since we dont have axle disconnects or locking/unlocking hubs like with electronic or manual/auto hub 4x4 systems

correcto?

i mean, not to make light of service and costs but it is just a plug to pull and a bottle or two to squeeze of mobil juice if ya still runnin open in the front, right?

technically you could get away with every 100k miles, and that's not advice, thats just probably the running state of half the non-LOST jeeps out there, people just don't think to do it unless the dealer offers or they have a problem

with very few exceptions im service OCD

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03 Renegade (Black)
177k miles 3.7L gas - 45RFE
Command Trac / 4.10s
Lift: ft. 790+ rr. JBA4+
The last of the TrailReady Front&Rear Bumpers and TR Rock Rails
Jarhead Offroad light covers
31x10.5R15 RedLetter Grabbers on Blackrock Dunes
L.O.S.T #KD098632

I’m not sure about the KJ, (I only have 14,900 miles on her) but my Dodge Ram does not have a drain plug, I have to pull the front diff cover. I replace all my fluids and lubricants with Amsoil.

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2015 Ram Ecodiesel/Big Horn/4x4/Quad Cab
2016 Arctic Fox 22G/Onboard 2500 LP Cummins Onan Generator/160 Watt Solar Panel

I took the road less traveled. Now I'm LOST.

KJ has a drain and fill plug.

Easy as pie, and twice as sweet

i didn't mean for the plug part to be a question

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03 Renegade (Black)
177k miles 3.7L gas - 45RFE
Command Trac / 4.10s
Lift: ft. 790+ rr. JBA4+
The last of the TrailReady Front&Rear Bumpers and TR Rock Rails
Jarhead Offroad light covers
31x10.5R15 RedLetter Grabbers on Blackrock Dunes
L.O.S.T #KD098632

The front diff oil should be changed at the same time as the rear diff,if you have skids the front diff does not cool as much and since it is tucked up and recieving heat from the egine also which will shorten oil life.As stated the front diff turns all the time in the KJ and the fact it does not hold very much oil it needs to be changed at the 12,000mile mark just like the rear diff.Your CTD requires less frequent front diff oil changes since it holds more oil and is cooled better then the KJ's front diff.