Standard Posted by VOLTRONIC GmbH official blog Posted on June 19, 2014 Posted under Dexos-2 VOLTRONIC 5W30 motor oil, OEM approval and accreditation Comments Leave a comment GM DEXOS, Dexos1 and Dexos2 approval for VOLTRONIC 5W30 motor oil GM DEXOS, Dexos2 approval for VOLTRONIC 5W30 motor oil Dexos2 – VOLTRONIC 5W30 motor oil