Why not do your car a favor? Drive it for a while.to let the rear end warm up ,Pull the cover plate or jerk the pumpkin. The gear lube has proberly never been changed since the car was new. Count the teeth on the ring gear, count the teeth on the pinion, Divide the pinion into the ring gear and you will know exactly what ratio you have. A LITTLE DAB WILL DO YOU! With the old lube, Take the end of one finger,dip it in the old the lube, rub your hands together and massage it in your hair,( just a little bit)It will drive your wife or girl wild....................Clean the surfaces,change the gasket,change the lube, do not overfill. But I think I know the answer to your real question without doing any of this. For what you want to accompolish the ratio is TOO HIGH!