Autotechnician magazine is an essential read for independent workshop owners and technicians - the October 2021 issue includes practical advice on filters, oils & additives, we have an exclusive feature on the rise of irreparable DPFs due to misuse of additives and lack of system knowledge from DPF Doctor Darren Darling, plus new car technology, workshop case studies, new products, and we interview the organisers of The UK Garage & Bodyshop event.