US$1.1 million saving for mining company with Mobil DTE 10 Excel™

London, UK – ExxonMobil has helped a gold mine in the US save more than $1.1 million by switching to its premium hydraulic oil, Mobil DTE 10 Excel™ 46. The lubricant helped optimise the performance of two 250t capacity Terex excavators, helping to boost productivity, save fuel and enhance safety.

The mine operator previously used a conventional hydraulic oil on the two Terex O&K RH 340 hydraulic excavators. But frequent failures due to cavitation damage and the effects caused by seasonal temperature swings meant the company had to replace 52 main hydraulic pumps at US$54,000 each over a 40-month period.

ExxonMobil field engineers partnered with the mine in California to identify a lubrication solution capable of mitigating equipment failure and cutting costs. The team recommended transitioning to Mobil DTE 10 ExcelTM 46 premium hydraulic oil.

Formulated with a proprietary additive system, the oil’s high viscosity index and strong shear stability means it offers wide temperature range performance and can help optimise machinery operating in the toughest of conditions.

The mine operator reported that Mobil DTE 10 ExcelTM 46 helped eliminate oil-related hydraulic pump failure. This helped improve productivity, while enhancing safety as 160 hours of human-machine interaction were eliminated as a result. Additionally, the lubricant helped reduce fuel consumption by 21,450 gallons, lowering CO2 emissions by 216 metric tons*.

These improvements helped generate a company estimated annual cost saving of more than $1.1 million.

“This is a great example of how a relatively small investment in a high performance lubricant can deliver significant productivity and financial gains,” said Mohamed Mourad, industrial marketing advisor at ExxonMobil. “It’s also important to recognise the safety benefits – a top priority for all mine site operators. We’re delighted that our field engineers could help our customer optimise the performance of their machinery and improve their bottom line.”

To learn more about the Mobil DTETM hydraulic oils Series or other Mobil-branded lubricants and services visit

About ExxonMobil

ExxonMobil is one of the world’s largest suppliers and marketers of fuels, lubricants and specialties, including lubricant base stocks, waxes and asphalt. Tracing its lubricants history to the Vacuum Oil Company, formed in 1866 and acquired in 1879, ExxonMobil has been at the forefront of lubricant technology innovation for more than 150 years. Its breakthrough products have helped to power some of mankind’s greatest technological feats, including the first gasoline-powered automobile, the first electric generating system, the first powered flight and the first space shuttle launch, among others. Today, ExxonMobil continues to develop new lubrication solutions for tomorrow’s machinery, to help keep the world moving.

[1] This Proof of Performance is based on the experience of a single customer. Actual results can vary depending upon the type of equipment used and its maintenance, operating conditions and environment, and any prior lubricant used.

* 216 metric tons of CO2 emissions reductions = 21,450 gallons of fuel consumption. 22.23 pounds of CO2 per gallon of diesel fuel 0.00045359 metric tons per pound. Emissions reduction calculated according to EPA published CO2 emission factors.