Mobil Delvac 1240 is a high performance, SAE 40, low sulfated ash diesel engine oil formulated to exceed the demands of a wide range of diesel engines. Mobil Delvac 1240 is especially formulated towards Detroit Diesel 2-cycle engines which require less than 1% sulfated ash. Mobil Delvac 1240 utilizes a select blend of base oils and balanced additives which control oxidation, deposits, and is especially effective on wear control in high speed, high temperature applications. Mobil Delvac 1240 is a preferred summer viscosity for many Detroit Diesel applications.
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