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Discussion Starter · #1 ·
Hello. I just changed my differential fluid for the first time. I have owned the vehicle 2 years. Not sure if previous owner changed it. 100k miles on my 09 Frontier. When I changed the fluid, both plugs were covered with thick gray sludge. There was also a pretty bad odor, especially from the rear differential. Just wanting to know if this is normal?
 

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Thx sabretooth. I did not see any water. Not sure where pressure valve is. I already refilled. Can this still be modified once it's full again? If so, can you provide me some more info on how to do this?
 

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Credit goes to badbrad358 for that but thx I did mine awhile back it's easy and you can do it anytime just spray the nipple with penetrating spray beforehand so you can unscrew it easier here there's a really nice write up on it with what you need following this link badbrad358 even put it into a pdf for you there's also others just do a search. I brought the nipple at Courtesy it was $3 an change plus the hosing,clamps and a small filter I got off eBay for a buck less than $10 total and you can get away without the filter but I put it on.

http://www.clubfrontier.org/forums/f62/2nd-gen-axle-vent-mod-write-up-40925/

This guy Nissan4Life even made a kit
http://www.clubfrontier.org/forums/f114/axle-vent-barbed-nibble-302801/
 

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What you found is normal and expected. No problems.

The sludge is super fine wear that the magnet collected. If it were chunky, thats when you will have problems. Gear oil is very well known for being stinky, some more than others.

No further action is needed.
 
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