Shell Rotella T6 5w-40 with Triple Protection Plus is a premium full synthetic diesel engine oil. The Rotella series is a premium line of heavy duty equipment lubricants manufactured by Shell Lubricants. "T-6" refers to a full synthetic diesel engine oil formulated with Triple Protection technology to provide protection against Wear, Deposits & Oil Breakdown. The "Plus" represents its better low temperature flow capabilities as well as fuel economy performance. Its low ash additive package is compatibility with exhaust after treatment systems using diesel particulate filters (DPF), diesel oxidation catalysts (DOC) and/or selective catalytic reduction (SCR). 5w-40 is the thickness of the oil based on Society of Automotive Engineers (SAE) standards.
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