Search query: royal purple 15w40 diesel oil synthetic
Product: Shell Rotella T5 Synthetic Blend 15W-40 Diesel Engine Oil (1-Gallon, Case of 3)
Brand: Shell Rotella
Highlights: Synthetic blend 15W-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, and oil breakdown
Ideal for on-highway fleets, construction, and agricultural machinery, and diesel pickup trucks — including high-power vehicles that require resistance to heat and stress
Improves low-temperature flow (compared to conventional 15W-40 oils)
Helps control engine deposits for reliability at extended oil drain intervals (always follow the OEM recommended oil drain interval)
Controls engine wear 37 percent better than the maximum wear requirements in API CK-4 engine wear tests
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