on video 35HP Oil Engine Start. 90 years old.


In its more than 90-year history, Mobil Delvac™, one of the world’s first diesel engine oils, has responded to the trucking industry’s ever-evolving needs with continued innovation and performance.
For the pioneering efforts of early owner-operators and today’s large and sophisticated fleets, Mobil Delvac has been there. It’s been a twisting, turning ride full of challenges met and obstacles overcome. As we look back on our history, we also look forward to the road ahead – and to keeping trucks on it.

Profile of Rudolf Diesel
1892 – Invention of the diesel engine
German engineer Rudolf Diesel files for patent on a revolutionary compression-ignition engine that will be named after him.

Scientists at Vacuum Oil 
1925 – Delvac is born
To help address the high pressure and heat generated in diesel engines, scientists at Vacuum Oil, a predecessor firm of ExxonMobil, devised a special oil formulation. Vacuum Oil registered the product in 1925 as Diesel Engine Lubricant by Vacuum Oil, or DELVAC. The Mobil Delvac brand was officially born.

Early Trucking industry vehicle
1930s – The first trucking boom
The increase of roads, along with growing use of pneumatic tires and diesel engines in commercial vehicles, creates the first boom in the trucking industry.

Post Word War II diesel truck
1940s – Diesel dominates the road
The diesel engine’s performance during World War II popularizes its use in commercial vehicles in the post-war years. As one of the first oils designed specifically for diesel engines, Mobil Delvac is used by many truckers.

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