rexpontius

Today I changed the diff oil of my 86.5 with LSD.
What came out did not even look like oil anymore, it was very black syrup like goo.

Filled it up with nice new 75w90 gear oil and the car feels noticably better.

should I flush the diff within the next say 1.000 miles to make sure all old oil/crud is out??

Cheers

blown 87

Am I reading your Sig right that the trans was rebuilt last year and the gear oil looked like that?

rexpontius

No fortunately not :-)
Rebuild consisted of engine and complete paint job, replacing all rubbers etc.

At that time i left the diff alone.

It seemed as if the oil in the diff was never ever changed.

Cheers

Ducman82

its only oil. do it in 1k for piece of mind

hacker-pschorr

+1

Not really necessary but it will bug you until the next fluid change.