???? ?? ????? S2 R 68 ?? ??????? ??????? ? ???????? ??? ?? ???? ????? ????? ???. ??? ???? ?? ???? ???? ?????? ?? ????? ????? ?????? ??? ??? ? ?? ???? ????? ?? ??? ?? ??smoothness ??? ????. Shell Corena S2 R 68 : Exceptional Performance in Demanding Environments Shell Corena S2 R 68 is a high-pe