Freightliner diesel pusher differential oil leak?

Question

Freightliner diesel pusher differential oil leak? The tiny drop on ground is very thin like water, almost clear, a little yellow, not oily, not sticky, no smell. It looks like it is coming from top of differential? I thought the differential is never filled to the top? Could it be something else, rain water, water plumbing leak from house plumbing, AC line condensate, what else is up there, what do you think?

ivylog · Answer

90 weight gear oil has a very strong odor so it's not from the rear axle. Something is dripping down on the differential and then on the ground.

rgatijnet1 · Answer

Do you have any plumbing above the diff? If not look for something that is leaking in front of this and blowing back as you drive.
All of the fluids with your engine have a smell, including antifreeze and brake fluid. Sort of sounds like urine. :B

45ricochet · Answer

Well it certainly looks rusty...as in H2O.

wolfe10 · Answer

Bottom line-- you need to remove the FILL plug from the rear axle and check for level and more importantly for fluid contamination.  It should be the "stinky" gear lube.  Clear, slightly yellow-brown, NO WHITE (sign of water intrusion).

crasster · Answer

No way is that differential oil.  That stuff is THICK and STINKY.  You'd definitely tell it was oil.  Can you get a hires photo of that area?  It's hard to say or guess on the smaller photo.

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Freightliner diesel pusher differential oil leak?

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