diff --git a/app/script/update_auto.py b/app/script/update_auto.py
new file mode 100644
index 0000000..0103a26
--- /dev/null
+++ b/app/script/update_auto.py
@@ -0,0 +1,52 @@
+from decimal import Decimal
+from datetime import datetime
+
+from app.models.auto import Auto_Delivery
+
+
+def update_automatic(get_delivery, gallons_delivered ):
+     
+        now = datetime.utcnow()
+
+
+        get_auto_delivery = (db.session 
+            .query(Auto_Delivery) 
+            .filter(Auto_Delivery.customer_id == get_delivery.customer_id) 
+            .first())
+        
+        gallons_put_in_home = Decimal(gallons_delivered)
+
+        customer_home_factor = get_auto_delivery.house_factor
+
+
+        new_home_factor = calc_home_factor(gallons_put_in_home = gallons_put_in_home,
+                                            current_house_factor=customer_home_factor)
+        get_auto_delivery.house_factor = new_home_factor
+        get_auto_delivery.tank_height = 'Full'
+        get_auto_delivery.last_fill = now
+        get_auto_delivery.estimated_gallons_left = 240
+        get_auto_delivery.estimated_gallons_left_prev_day = 240
+        get_auto_delivery.auto_status = 0
+   
+        db.session.add(get_auto_delivery)
+
+
+def calc_home_factor(gallons_put_in_home, current_house_factor):
+
+
+        if 200.01 >= gallons_put_in_home >= 500:
+            customer_home_factor = Decimal(current_house_factor) + Decimal(1)
+        elif 170.01 <= gallons_put_in_home <= 200:
+            customer_home_factor = Decimal(current_house_factor) + Decimal(1.5)
+        elif 150.01 <= gallons_put_in_home <= 170:
+            customer_home_factor = Decimal(current_house_factor) + Decimal(1.25)
+        elif 120.01 <= gallons_put_in_home <= 150:
+            customer_home_factor = Decimal(current_house_factor) - Decimal(.25)
+        elif 90.01 <= gallons_put_in_home <= 120:
+            customer_home_factor = Decimal(current_house_factor) - Decimal(.50)
+        elif 0.01 <= gallons_put_in_home <= 90:
+            customer_home_factor = Decimal(current_house_factor) - Decimal(.75)
+        else:
+            customer_home_factor = Decimal(current_house_factor)
+
+        return customer_home_factor
\ No newline at end of file