Does anybody have any a-z tips on changing the fluid in the transmission and differential on a '50 3100? The service manual doesn't even address how to do this, only that it needs to be done. I can't find anything on this site that addresses it in detail.
I guess my biggest question/concern is, if there's only one port (drain/filler plug) on the differential, how can you drain it and fill it through one hole? It defies physical logic.
Thanks!
