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SHELL LUBRICANTS TOOK the wraps off its new portfolio of Shell Rotella CK-4 and FA-4 diesel engine oils at a special event in the nation's capital in late July. The oils are designed to meet the Proposed Category 11 (PC-11) specs finalized back in February.
Shell's Rotella T4 Triple Protection 15W-40 and 10W-30, along with T5 Synthetic Blend 10W-30, meet...