Front Differential fluid change

[TheGreatOne]

Just curious as to why the front differential fluid comes out sort of milky...or at least the existenceof some white material....anybody who has changed theirs experience this? 

 

I'm not a mechanic....just a weekend DIYer.....so please don't roast me.  Plug had some normal sludge.

[elcamino]

fyi

Gear Fluid Conditions


 

The color of the fluid can be an indicator of contamination; however, some colors can be easily confused with the normal color of some fluids.

New fluid is usually red or light brown. With time and miles, used fluid often turns black. This is a result of the normal chemical process that occurs as the additive package in the fluid degrades. The black color does not indicate that the fluid’s useful life has been exhausted.

When a fluid is a milky brown color, it may indicate that the fluid is contaminated with significant moisture. The fluid should be changed.  Water contamination of the axle lube also creates significant odor and forms corrosive conditions that will cause internal components of the axle to corrode. Milky-colored fluid combined with rust particles is a sign of moisture contamination either from submersing the axle vent, a pinched or misrouted vent hose, or a failed seal that is allowing moisture to enter the axle.



Under 5000 miles (8,000 km) of operation, hypoid axle lube may appear tinted and have a whitish or yellow appearance from the gear marking compound used in the production of the axle.



From GM tech Line

[TheGreatOne]

Well I definitely wasn't under 5000 miles but it definitely looked like yellowish greenish tint

 

Something like this

[TheGreatOne]

Got this off a YouTube video since I didn't take pictures