Imperial Oil says the new Mobil Delvac 1 ESP SAE 0W-40 heavy-duty synthetic motor oil was made for those critical 60 seconds after a diesel engine fires and oil begins flowing from the crankcase to vital components. Until lube makes its way throughout the engine, bare metal scrapes against metal. Over time, microscopic layers are shaved from the surface of key engine parts.

Rigorous testing, says the company, shows that Mobil Delvac 1 ESP SAE 0W-40 reaches the farthest parts of an engine within that all-important first minute, even in temperatures as low as minus-43 Celsius.

The company calls the new lube “one of Imperial Oil’s most important achievements.”

The oil is said to maintain a strong, stable film of protection under heavy-load and high-temperature conditions. This stability allows it to resist thermal degradation that can lead to sludge, viscosity breakdown and the formation of harmful deposits. As a result, says Imperial, “Mobil Delvac 1 ESP SAE 0W-40 customers may find they can extend oil-drain intervals.”

Mobil Delvac 1 ESP SAE 0W-40 “significantly exceeds” the engine-protection requirements of the American Petroleum Institute’s CJ-4 standard for 2007 and later low-emission engines. There should be emissions benefits as well, like faster, cold-morning start-up meaning less time idling.

Imperial also says the new lube can improve fuel efficiency by 0.5%.

Mobil Delvac 1 ESP SAE 0W-40 is supported by Imperial’s technical application experts at 1-800-268-3183.