[mhaseleu03]

I have an after market ford 9" rear in my car. Took the car on a 50 mile ride today longest since its been on the road and the is oil coming out of the breather that is on top the rearend. When I filled it i filled to the plug hole. Is just maybe over full and the pressure built up from the heat from the ride. Should I be concerned or drive it until the oil stops coming out.

[Man In Black]

Originally Posted by mhaseleu03

I have an after market ford 9" rear in my car. Took the car on a 50 mile ride today longest since its been on the road and the is oil coming out of the breather that is on top the rearend. When I filled it i filled to the plug hole. Is just maybe over full and the pressure built up from the heat from the ride. Should I be concerned or drive it until the oil stops coming out.

Could be that you just put the wrong lubricant in the rear and it is foaming , forcing some to come out. Quaker State products have been known to foam. What does the leaking lubricant look like?

[DOUG G]

Is the breather in line with the ring gear ? (or close to)

Heard this problem before with a certain rear builder.
Could be as easy as raising the vent for a easy fix.

[Moonpie]

What did you fill the rearend with?

[mhaseleu03]

i filled it with Lucas 80/90 gear lube and the addititve that the mfg sent with the rear end. The breather is off to one side of center in the axle housing area.

[DOUG G]

The breather is ....
just a vent ?
screw in cap with breather ?

You could use a hose (braided looks good) to raise it up to the body with enough slack that the suspension doesn't rip it out ?