I suspect I have a worn pinion gear (scuffed?)which is a bit noisy. I was thinking maybe a heavier weight 80-140 weight lube might quiet it down abit for the time being. I am not in a big hurry to replace it at this time. Is this a bad idea.? Before we bought the car it appears that the rear end seal had been leaking and might be the reason the pinion is acting up now. Not a big problem just a noise nuisance. Thanks.
larry