diff --git a/app/__init__.py b/app/__init__.py
index d9343ec..bb238a8 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -61,9 +61,21 @@ def user_registered_sighandler(application, user, confirm_token):
     tools.db_log_add(new_vehicle)
 
 
+def assure_consumable(name, ext_id, unit):
+    if not Consumable.query.filter(Consumable.ext_id == ext_id).first():
+        c = Consumable(name, ext_id, unit)
+        db.session.add(c)
+
+
 @app.before_first_request
 def before_first_request():
     db.create_all()
+
+    # make sure all consumables from tankerkoenig exist: diesel, e5, e10
+    assure_consumable('Diesel', 'diesel', 'L')
+    assure_consumable('Super','e5', 'L')
+    assure_consumable('Super E10','e10', 'L')
+
     user_datastore.find_or_create_role(name='admin', description='Role for administrators')
     user_datastore.find_or_create_role(name='user', description='Role for all users.')
     db.session.commit()
diff --git a/app/entities.py b/app/entities.py
index e47b614..fe86c52 100644
--- a/app/entities.py
+++ b/app/entities.py
@@ -142,6 +142,7 @@ class Consumable(db.Model):
     """
     id = db.Column(db.Integer, primary_key=True)
     name = db.Column(db.String(255), unique=True)
+    ext_id = db.Column(db.String(255))
     unit = db.Column(db.String(255))
 
     vehicles = db.relationship(
@@ -149,8 +150,9 @@ class Consumable(db.Model):
         secondary=vehicles_consumables
     )
 
-    def __init__(self, name, unit):
+    def __init__(self, name, ext_id, unit):
         self.name = name
+        self.ext_id = ext_id
         self.unit = unit
 
     def __repr__(self):
diff --git a/app/forms/consumable.py b/app/forms/consumable.py
index a63b3e6..59ed312 100644
--- a/app/forms/consumable.py
+++ b/app/forms/consumable.py
@@ -10,12 +10,14 @@ class SelectConsumableForm(FlaskForm):
 
 class CreateConsumableForm(FlaskForm):
     name = StringField('Name', validators=[Length(1, 255)])
+    ext_id = SelectField('Tankerkönig ID', coerce=int)
     unit = StringField('Unit', validators=[Length(1, 255)])
     submit = SubmitField(label='Do it!')
 
 
 class EditConsumableForm(FlaskForm):
     name = StringField('Name', validators=[Length(1, 255)])
+    ext_id = SelectField('Tankerkönig ID', coerce=int)
     unit = StringField('Unit', validators=[Length(1, 255)])
     submit = SubmitField(label='Do it!')
 
diff --git a/app/routes/admin.py b/app/routes/admin.py
index a978daf..dc63702 100644
--- a/app/routes/admin.py
+++ b/app/routes/admin.py
@@ -22,6 +22,8 @@ def get_admin_page():
 @login_required
 def create_consumable():
     form = CreateConsumableForm()
+    choices = [(0, ''), (1, 'diesel'), (2, 'e5'), (3, 'e10')]
+    form.ext_id.choices = choices
 
     # preinitialize the defaults with potentially existing values from a try before
     if form.name.data is not None:
@@ -30,7 +32,7 @@ def create_consumable():
         form.unit.default = form.unit.data
 
     if form.validate_on_submit():
-        new_consumable = Consumable(form.name.data, form.unit.data)
+        new_consumable = Consumable(form.name.data, choices[form.ext_id.data][1], form.unit.data)
         db.session.add(new_consumable)
         try:
             db.session.commit()
@@ -70,19 +72,30 @@ def edit_consumable(cid):
         return redirect(url_for('get_admin_page'))
 
     form = EditConsumableForm()
+    choices = [(0, ''), (1, 'diesel'), (2, 'e5'), (3, 'e10')]
+    form.ext_id.choices = choices
 
     form.name.default = consumable.name
     form.unit.default = consumable.unit
+    form.ext_id.default = 3
+    for c in choices:
+        if c[1] == consumable.ext_id:
+            form.ext_id.default = c[0]
 
     # preinitialize the defaults with potentially existing values from a try before
     if form.name.data is not None:
         form.name.default = form.name.data
     if form.unit.data is not None:
         form.unit.default = form.unit.data
+    if form.ext_id.data is not None:
+        form.ext_id.default = form.ext_id.data
 
     if form.validate_on_submit():
         consumable.name = form.name.data
         consumable.unit = form.unit.data
+        print(form.ext_id.data)
+        consumable.ext_id = choices[form.ext_id.data][1]
+        print(consumable.ext_id)
         try:
             db.session.commit()
             db_log_update(consumable)
diff --git a/app/templates/createConsumableForm.html b/app/templates/createConsumableForm.html
index 1634ccf..270e363 100644
--- a/app/templates/createConsumableForm.html
+++ b/app/templates/createConsumableForm.html
@@ -9,6 +9,7 @@
             <form class='form-horizontal' method="POST">
                 {{ form.hidden_tag() }}
                 {{ render_field_with_errors(form.name) }}
+                {{ render_field_with_errors(form.ext_id) }}
                 {{ render_field_with_errors(form.unit) }}
                 {{ render_field_with_errors(form.submit) }}
             </form>
diff --git a/app/templates/editConsumableForm.html b/app/templates/editConsumableForm.html
index cea6d0e..0289b65 100644
--- a/app/templates/editConsumableForm.html
+++ b/app/templates/editConsumableForm.html
@@ -9,6 +9,7 @@
             <form class='form-horizontal' method="POST">
                 {{ form.hidden_tag() }}
                 {{ render_field_with_errors(form.name) }}
+                {{ render_field_with_errors(form.ext_id) }}
                 {{ render_field_with_errors(form.unit) }}
                 {{ render_field_with_errors(form.submit) }}
             </form>