The night before you want to cook your pork loin, mix all marinade ingredients in a gallon ziploc bag. Add the pork and refrigerate overnight.
The next morning, place the pork loin into your slow cooker and discard the marinade. Cook on low for 6 to 8 hours.
One hour before you are ready to eat, put all Coca~Cola sauce ingredients into a pot and simmer for 10 to 15 minutes, until thickened. Pour 1/3 of the sauce over the pork loin and cook for another 30 minutes.