how much oil front dif

[rollavvti06]

Im going through a list of things trying to figure out a binding grinding noise next step is front dif fluid change so question how many quarts of 75-90 is needed and is there a drain and fill hole or just fill hole amd have to pop off the cover to drain

 

[tonydiv]

If you're hunting down an issue, then you're going to want to pop off that cover to inspect it anyway. Pick up 2 quarts of diff fluid and fill it until drips out the fill plug.

 

[rollavvti06]

Well i changed the fluid and didnt have time to take cover off. I figured the oil waa cheap enough i could change it again if needed. Well it got worse aftwr the new fluid and i found fine metal particales in the oil. Next question is the differentials seem cheap used. What gears are best ?i have 3.73 in rear. And the f150 97-02 should be the same as the expedition?