Preheat the oven to 400 degrees F.
Drizzle the oil over the pork and sprinkle liberally with salt and pepper. Transfer the pork to a rack over a heavy-bottomed roasting pan.
Roast the pork until a meat thermometer inserted into the thickest part of the loin reads 140 degrees F, about 1 hour.
Let the pork rest for 10 minutes, before storing and reserving for leftover recipes.