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Mobil Delvac™ engine oil has been protecting diesel-powered engines in big rigs and other heavy equipment for more than 80 years.

Trucking fleet companies log millions of miles on their rigs, and their many customers rely on dependable, on-time delivery – so the name of the game is keeping the machinery running smoothly under all kinds of conditions.

A fleet of big rigs represents an enormous capital investment. Fleet owners can’t afford to take maintenance shortcuts.

Mobil Delvac diesel engine oils can help extend engine life with long drain intervals, and many fleet owners credit our specially formulated lubricants with helping them keep their rigs in tip-top running order.

Hear from a variety of successful companies that rely on Mobil Delvac engine oil to keep their rigs, and their businesses, moving forward.

These articles reflect the experiences of individual customers. Actual results can vary depending upon the type of equipment used and its maintenance, operating conditions and environment, and any prior lubricant used.

Lowering costs with oil change intervals

After extensive research and testing, Schneider National made the move to Mobil Delvac™ Elite.

Extending oil drain intervals

Pride Transportation has been able to extend oil drains by 140 percent and save on maintenance costs with Mobil Delvac™.

No time for downtime

Find out why the Union Power Cooperative has relied on Mobil Delvac™ 1300 Super for its diverse fleet for more than 25 years.

Making good business decisions

10 years ago, Lesmeister Transportation upgraded its entire fleet to Mobil Delvac 1™ synthetic diesel oil and reaped big benefits.