Shell Morlina S4 B 320 is a high performance synthetic based oil designed to provide excellent lubrication in bearing and circulation systems. Morlina is a line of Shell Lubricants that have outstanding rust and oxidation resistance. S4 represents the synthetic base oil that offers outstanding lubrication performance, improved energy efficiency and long service life under challenging operating conditions. "B" designates that it is for Bearing Lubrication. 320 represents the thickness of the oil which is an International Standards Organization Viscosity Grade (ISO VG) 320.
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