What do you think about the various Japanese oil brands? (A.S.H, power cluster, ENEOS, WAKOS, NEWEST etc.) Actually, only in north-eastern asian region,they are sold much more than any other brand(such as M1, BP, Total, shell, SK, etc.) In addition, they are sold with the higher price (even 2 times higher)than the major listed above, even though many of the Japanese brands do not release the information(MSDS, PDS)on their web-site. Nevertheless, due to the successful marketing strategy, they are highly evaluated.