When training to turn out to be a gasoline engineer, you should give attention to courses that cover the coaching for the appliances you need to work with, similar to CENWAT (central heating boilers), HTR1 (gas fires) and CKR1 (gas cookers). https://soldeprimavera.org/nuestro-trabajo/nuestros-proyectos/formacion-tecnico-profesional/item/39-cartucheras-2