Adding Diff Oil - GM

[NickZ]

Any advice/tips on the best way to add rear diff oil?

I bought a filler line contraption from the auto parts store, a few f bombs later I put it in the trash. Put a rubber gas line on and squeezed, but must have put half a quart on the garage floor before all said and done. I think its time to have a talk with the wife about a hoist...

Thanks in advance.

Nick