There's not that much oil in there....maybe an ounce, if all the cups are full....and besides, when the tone wheel runs, it's getting oil all over everything anyway....that's why there's usually a fiberglass panel underneath...to catch the oil so it's not dripping on the bottom where the main amp/tubes are.
What model is it?
I have an L100 in my studio....1965 vintage.
If it hasn't been oiled in years....it most likely will not work at all or it will grind and squeal like crazy...so turn it on, and if it's quiet, you know it's been kept up.
Open the back, and look at the oil cups....if there's oil still in the cups, just soak it up with some cotton or some rags. There is also the metal drip channel that catches most of
the excess oil coming off the tone wheel....you should be able to gently stick a couple of rags in there to soak up any excess oil.
After that....turn it on its side and drive it home. Then oil it before using....just enough to fill the cups, and a few drops at the motor (there should be a small cap where the oil goes). Check it once/twice a year.
When I moved mine, I didn’t even take out the tube….just avoid the pot holes and bumps on the way home.