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Inside the engine: 10 years running Mobil Delvac 1™ ESP
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There's no better way than looking inside an engine to determine a lubricant's effectiveness. See what our team of ExxonMobil experts found after they disassembled a Cummins KTA38 marine diesel engine running on Mobil Delvac 1 ESP 5W-40 for 10 years.