1. For glaze, in a small saucepan combine plum preserves, soy sauce, sage, lemon juice, and cooking oil 2. Heat until preserves melt, stirring occasionally 3. Trim fat from meat 4. Insert a meat thermometer near center of roast.
Preheat gas grill
Adjust heat for indirect cooking
Place pork roast on a rack in a roasting pan on the grill rack over medium-low heat
Cover and grill for 1 to 1 1/4 hours or until meat thermometer registers 160 degrees F to 170 degrees F, brushing occasionally with glaze after 30 minutes