Place the turkey in a large mixing bowl and set in the fridge.
In a large skillet, warm the oil and then saute the carrots, celery and onions until the onions are translucent.
Add in the garlic and saute for about 1 minute longer.
Remove from heat and cool completely. (I set mine in the fridge while I ran an errand)
When the veggies are cool, transfer them to the mixing bowl with meat and, using your hands or a wooden spoon, knead the veggies into the meat, mixing well.
Transfer the whole mixture to your oiled loaf pan and bake for 50-60 minutes, or until the internal temperature reaches 165 F. on a meat thermometer.
Cool slightly, slice and serve.
Notes
Please note that the nutrition data given here is a ballpark figure. Exact data is not possible.