Re: '39 Packard 110 Transmission Fluid (& Rear Dif Fluid)

Posted by Owen_Dyneto On 2010/6/5 17:19:49

Your vehicle doesn't have a limited slip differential so I'd question what affect, if any, those additives might have. If it were mine, unless the product information says it's also acceptable for non-limited slip differentials I'd drain and refill with the same lubricant w/o the limited slip additives. Probably a case of being over-cautious. I've used SAE85W-140 EP hypoid in all my Packard differentials and transmissions and steering gear boxes for many years, never a problem.