George got it.
That pipe nipple can get clogged with gear oil and grease. You can remove (unscrew) the pipe assembly and clean it out before putting the hose back on.
But also, notice how the pipe nipple is clean, seems like either the hose was recently pulled off or someone wiped it off, but then why wipe off just that nipple and not put the hose back on??
Have you checked the gear oil level in your front diff recently?
Either way as others have said, put that hose back on the nipple for now but for long term many people have bypassed the poorly functioning factory axle breather (on the other end of that rubber hose) and ran a hose up to the engine compartment with a small filter on the end.
Agree, all that goo is good rust proofing, but then it does make a mess.
That pipe nipple can get clogged with gear oil and grease. You can remove (unscrew) the pipe assembly and clean it out before putting the hose back on.
But also, notice how the pipe nipple is clean, seems like either the hose was recently pulled off or someone wiped it off, but then why wipe off just that nipple and not put the hose back on??
Have you checked the gear oil level in your front diff recently?
Either way as others have said, put that hose back on the nipple for now but for long term many people have bypassed the poorly functioning factory axle breather (on the other end of that rubber hose) and ran a hose up to the engine compartment with a small filter on the end.
Agree, all that goo is good rust proofing, but then it does make a mess.