While transporting a scroll on its side is not ideal i don't think you would get much if any oil through the scroll and into the output side which is just the top couple of inches of the body.

They hold between 2 and 4 pints so again there is unlikely for there to be enough volume above the scroll to hold its entire oil charge.

When you take the rubber bung out of the discharge port to pipe it any large amount of oil would flow out anyway, so would have been obvious to the original installer.

Have a look here for a typical scrolls workings,

http://www.youtube.com/watch?v=xSYuB...eature=related

Suspect soemthing else was or went wrong.

Was a new drier fitted the first time?

Jon