Differential oil. Best modern oil weight

Posted by Rscott77x On 2017/1/18 15:16:07

I have a 1947 Clipper. My differential weeps a little and I have to keep a pan under it. I think this is fairly common with a pinion seal of that vintage as the technology was not there to prevent weeping. The pinion seal was pretty simple. Am I correct in this suspicion???

Anyway, what modern weight oil is best to minimize weeping?

Thanks