Doing chef steps turkey, I have a question. Do I have to put an oil in the bag

I'm using my own dry brine, but during the dry brine stage and bagging, it says to put in about 30 g or 60 g of oil in the bag. Is that really necessary? I've already got all my pieces bagged up separately and I'm curious if I really need to be putting oil in there.

https://www.chefsteps.com/activities/a-better-way-to-turkey-cook-that-bird-sous-vide-for-the-best-feast-ever