Kerry:

Drain it at once and replace with gear oil! Automotive engine oil isn't thick enough to properly lubricate rear end gears, teflon or not -- it gets sqeezed out of the gear contact faces.

There are only a few square millimeters of gear face actually in contact at any given time in the helical cut gears back there -- you are literally pushing the car with your fingertip -- imagine the pressure!


Synthetic gear lub is fine --SAE 90 wt or multiviscosity, but it MUST be gear lub or the rear end will fail.

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!