Bahri, Syaiful2013-03-142013-03-142013-03-14wahyu sari yenihttp://repository.unri.ac.id:80/handle/123456789/2591Research of thermal treatment on crude oil has been done successfully. Experiments have been conducted on various temperatures treatment on crude oil sample on atmospheric condition looking for the de-asphalthened of the crude. Results have been achieved that thermal treatment has significantly effect on SARA fraction of the crude oil especially on asphalthenes. It was also found that asphalthenes content of the crude decreased conversely with the temperature increases. The best ever found result was given on temperature 220fenUR e-Research