???? ?? ????? S2 R 68 ?? ??? ????? ??????? ? ???????? ??? ?? ???? ????? ????? ?? ???? ?? ???. ??? ???? ?? ???? ??? ?????? ?????? ?? ????? ???? ?????? ??? ??? ? ?? ???? ????? ?? ??? ?? ??smoothness ???? ????. Shell Corena S2 R68 : Superior Performance Under Tough Conditions Shell Corena S2 R 68 is a high-performance hydraulic oil formulated to