Does this look bad...?
Thread Starter
|
Post Fiend
Joined: Aug 2010
Posts: 13,710
Likes: 5
From: Manchester, CT
Does this look bad...?
While i was changing my rear differential fluid today, i noticed the fluid looked pretty black. much different from some other pictures ive seen when people change the fluid and it still looks golden brown. it was very thick and at the bottom of the case it was almost a solid, felt like pudding. was hardly any shavings on the fill plug
Filled upto the fill plug with Mobil 1 Synthetic 75W-140
Thanks for looking
Filled upto the fill plug with Mobil 1 Synthetic 75W-140
Thanks for looking
Hotshot
Joined: Mar 2007
Posts: 10,101
Likes: 40
From: Pa
Yeah thats dirty and looks like it probably has a bunch of spent friction material from LSD clutch pack. Mine was golden brown but you could see some friction material particulates in it when held up to the light. The 75-140 is very thick gear oil so its going to be a little gooey. Make sure you change the transfer case fluid. Mine was dirtier than I thought even with less than 35k on it.
Lead Driver
Joined: Oct 2009
Posts: 5,406
Likes: 229
From: Pa
Look's like at some point it got water in it. Not good, but if you see no unusual wear, and hear no unusual noises, you will prob be fine. You might want too have a look see, too see how it look's in a couple weeks, you may need another change or 2.
Trending Topics
Super Moderator
Joined: Aug 2008
Posts: 37,383
Likes: 1,867
From: Frederick, MD
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
You Keep What You Kill
Joined: Dec 2006
Posts: 4,902
Likes: 2
From: Huntersville, NC
I agree...
Lead Driver
Joined: Oct 2009
Posts: 5,406
Likes: 229
From: Pa
Mine had 60,000, on it, and I have limited slip, and mine looked like iced tea yet. I cross River's over the tires, play in mud alot, and trail ride (as much as you can in a stock crew cab). What your's looks like is not normal. I would atleast monitor it. I am pretty certain that you will have no problem's (as you don't now), But I would atleast suck a sample out, and look at it.
Lead Driver
Joined: Oct 2009
Posts: 5,406
Likes: 229
From: Pa
Check your Axle breather tube. Make sure it is up under the bed, and there is no crack's in it. Also check that antilock sensor thing on the pumpkin (vss) to make sure it is sealed.
Check for a plugged breather too. Sometimes bug's like too build nest's in them!
Check for a plugged breather too. Sometimes bug's like too build nest's in them!