According to the Waste Oil Ordinance, we are obliged to take back the following used oils free of charge: combustion engine oils gear oils Oil filters and oily waste that occurs regularly when changing the oil. You can return the used oil to us in the amount that corresponds to the amount you bought from us. Our acceptance point is: Gehmann GmbH & Co. KG Karlstrasse 40 76133 Karlsruhe Tel: 0721 24545 Email: info@gehmann.com You can drop off the oils there at any time during opening hours. Alternatively, you can also send the used oil to our acceptance point, whereby the shipping costs are to be borne by you. Please note that special transport conditions apply to waste oil!