The best thing to brush your turkey with is this:
Get
Penzey's Poultry seasoning. I swear this is the best stuff--forget that stuff in the grocery store.
Take about 1/4 cup apple juice and heat it up in the microwave
Add 2 TB of Penzey's Poultry seasoning
1/2 ts garlic powder
dash fresh ground black pepper
dash paprika for color
1 ts salt
Mix together and allow it to set so that the spices are moist and soft, and most of the juice should be absorbed. Mix your choice of cooking oil--about 3TB.
Pat turkey dry and salt and pepper the cavity*. Brush spice mixture all over turkey--don't forget the underside. Insert thermometer in thickest part of the thigh, not touching the bone. Place Turkey in the oven with feet facing the back of the oven. Roast per the temp and time indicated on the wrapper. You DO NOT need to baste during cooking. Just watch for areas that are getting brown before other areas, and wrap those areas with foil that has the spice/ oil mixture brushed on the side that will be touching the turkey. Turkey is done when the thermometer reaches 190*F. Remove from the oven and allow it to set AT LEAST 15 minutes, undisturbed, before carving.
*I prefer not to stuff my turkey, because you have to cook it longer and the breast can get more dry. Plus, you just can't fit all the stuffing inside. So I cook my stuffing in the crock pot.