Stir together milk, vegetable oil, sugar and salt in a small saucepan. Heat to lukewarm.
Pour yeast over 2 tablespoons lukewarm water and let sit 5 minutes.
Stir the yeast/water mixture into the milk mixture.
Transfer milk mixture to a large mixing bowl and beat in half the flour by hand or with an electric mixer.
Mix in enough remaining flour to make a soft dough (you may need a little less than 2.5 cups total)
Let rest 10 minutes; knead well on a floured board or with an electric mixer and dough hook; let rest 10 minutes.
Spray a large, clean bowl with cooking spray, add dough, cover with plastic wrap and let rise in a warm place until doubled, about 1 hour.
Lightly coat a 9-inch round baking pan with cooking spray.
Turn the dough onto a floured surface and roll into a 12 x 10-inch rectangle.
Spray the rolled out dough with cooking spray.
Stir together brown sugar, maple syrup, cinnamon, nutmeg and orange zest; brush over dough.
Sprinkle with raisins.
Roll up tightly, like a jelly roll.
Cut into 12 pieces.
Place buns cut-side up in baking pan.
Cover with plastic and let rise until doubled, about 1 hour.
Preheat oven to 350°F.
Bake buns until firm and nicely browned on top, 30 minutes.
Cool completely before serving.