Millbrook Fuel Economy Tests

Independent fuel economy tests were conducted on two Volvo FM440 Euro V trucks, loaded to 75% payload (circa 32 000kg) and two Iveco Eurocargo 75E16 EEV Euro V trucks, loaded to 50% payload (circa 6.2 tonnes) which undertook a series of fuel economy tests under highway driving conditions.

Mobil Delvac 1™ LE 5W-30 was used in the engine and Mobilube 1™ SHC 75W-90 was used in the rear axle for both vehicles, with Mobilube 1 SHC 75W-90 and Mobil Delvac™ Synthetic Transmission Oil V30 used in the transmissions of the Iveco and Volvo trucks respectively. Mobil Delvac 1 LE 5W-30 achieved an average fuel economy gain of 1.8% changing only the engine oil1.

With Mobil Delvac 1 LE 5W-30, we have created an advanced heavy-duty diesel engine oil that can meet the technical requirements of current and future engines and deliver enhanced fuel economy potential. Statistically significant fuel economy benefits were observed when comparing the synthetic products to the mineral products with an average fuel economy gain of 2.0% in Volvo engines and 1.7% in Iveco engines for city driving conditions and 2.9% for highway driving conditions2.

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1A fuel economy evaluation was conducted using two Volvo FM440 Euro V trucks, loaded to 75% payload (circa 32 000kg) Testing was conducted on track at the Millbrook Proving Ground, Ltd. in the United Kingdom. Statistically significant fuel economy benefits were observed in the Volvo trucks, when comparing Mobil Delvac 1 LE 5W-30 to a mineral 15W-40 engine oil, with an average fuel economy gain of 1.8% for highway driving conditions. Corrections were applied when changes in test environment had a statistically significant impact on fuel economy. Fuel economy improvements are dependent on vehicle/equipment type, outside temperature, driving conditions and your current fluid viscosities.

2 A fuel economy evaluation was conducted using two Iveco Eurocargo 75E16 EEV Euro V trucks, loaded to 50% payload (circa 6.2 tonnes). Testing was conducted on track at the Millbrook Proving Ground, Ltd. in the United Kingdom. Mobil Delvac 1 LE 5W-30 was used in the engine, Mobilube 1 SHC 75W-90 was used in the rear axle and transmission as candidate oils. These were compared to a mineral 15W-40 in the engine, a mineral 85W-140 in the rear axle, and a mineral 80W-90 in the transmission as reference oils. Statistically significant fuel economy benefits were observed when comparing the synthetic products to the mineral products, with an average fuel economy gain of 2.9% for highway driving conditions. Corrections were applied when changes in test environment had a statistically significant impact on fuel economy. Fuel economy improvements are dependent on vehicle/equipment type, outside temperature, driving conditions and your current fluid viscosities.

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