Regarding the disposal of used oil: Improper disposal of used oil is dangerous to the environment – for this reason, we are prepared to collect your used combustion engine or gear oil free of charge. Register a pick-up request for your used oil and its container under the email address Email-Adresseentsorgung@delti.com. Please note that we will only collect the oil which you have bought from us, therefore the collected oil cannot exceed the amount you have bought. We ask you to please include your original order number in your request. Furthermore, please make sure that the container is packaged and the cans are tightly sealed, to avoid the oil leaking or spilling during the transport. Old oil can also be returned to most petrol stations, waste collections and recycling centres, although a nominal may be fee. Please contact your local waste collection or community information centre for more information. This notice also applies for used oil filters and other oily waste resulting from oil changes.