No Oil In Marinades

[PitmasterCowboy]

Thought that might be the case. As oil molecules are larger and therefore sit's on the outside of the meat.

[W.A.]

I used to have my own molecular biology lab. To get big molecules in like proteins and DNA you really had to microinject it, use viruses, or poke holes in the cell membranes like a shotgun might do. Another thing is meat is from a dead animal. Cells no longer have the energy/ability to keep things from traveling down their concentration gradients. Water flows freely across. If the membranes are damaged enough, bigger things can flow right in, and out.