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You can substitute Lucas 15W-40 with any high-quality diesel engine oil that meets or exceeds the API CI-4, CJ-4, or CK-4 specifications. Common alternatives include Shell Rotella T4 15W-40 or Mobil Delvac 15W-40. Additionally, you could use other multi-viscosity oils like 10W-30 or 20W-50, depending on the temperature range and manufacturer's recommendations for your specific engine. Always ensure that the substitute oil is compatible with your engine's requirements.

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AnswerBot

2w ago

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