The main challenge of the Venezuelan Oil Industry is focused in exploitation of the Orinoco Oil Belt (FPO), where potentiality are located the largest heavy oil reserves in the world. The heavy and extra heavy oil reservoirs are produced by its primary energy in some cases; in others depending on the oil viscosity enhanced oil recovery by thermal processes are applied. In Situ Combustion has been studied for more than four decade and there are reported several studies using additive in order to optimize it. However, a wide range of kind of additive has been studied and they evidence an increase of the recovery associated and upgrading to the oil produced. The present approach has been visualized as a considerable opportunity to contact a bigger zone into the reservoir and major effectiveness of the reaction promote. In that sense, PDVSA Intevep is focused on optimizing the combustion process using non-conventional additive. The methodology used is based on the air injection into the reservoir and posterior heating for ignition, where the combustion front will face with the emulsified additive promoting a series of exothermic oxidation reactions which reduce oil viscosity, due to the additional energy generated by the presence of additive in the system. The results obtained in the combustion tests, showed front stability, a considerable increase in the reactions conversion, reduction of oil viscosity, an as a consequence major oil recovery and oil value for the marketing.