Differential Breather

[John248]

Oil over fill was another thought I had. But the fill level was recommended to be at or just below the oil fill hole and that’s where I stopped. There is no loud gear whine or smell of burnt oil and the oil itself is still clean.

The new oil breather is bolted to the front outer trunk wall about 12 inches above the top of the differential itself.

[Gaz64]

If the crownwheel is splashing oil up to the FITTING on the diff housing, it will pump oil up a tube as the pressure increases from temperature.

So whereabouts on the diff housing is the breather fitting?

[eschaider]

Originally Posted by Gaz64

If the crownwheel is splashing oil up to the FITTING on the diff housing, it will pump oil up a tube as the pressure increases from temperature ...

This ^

Inadequate cooling along with internal oil splash is frequently the culprit. A flexible hose to an overflow / expansion tank will fix your problem without going to the expense of an oil cooler for the diff.

That said if the internal temps are getting high enough to force this leakage problem, it could be to your advantage to use an oil cooler for the diff.


Ed