My transmission is slipping from a stop. Seems to run fine when I"m going, but this morning the a/t oil temp light came on, I pull over, park, and it goes off, and I try heading back home. But now it's slipping every time I go from a stop. Looks like the differentials are leaking (both!?).

Will be bringing it in back to the shop after labor day. They had just finished swapping in a new long block (needed a new engine). My question is...does this tranny/diff issue have anything to do with the shop screwing up when they installed the new engine, or is this the freaking perfect storm of automotive disasters for me?