The control lubricants were Shell Rotella T 15W-40 for the engines, Quaker State SAE 90 for the transmissions and Citco 85W-140 for the drive axles. The control truck used the control lubricants for all driving segments and the test trucks used the control lubricants for their baseline segments.
The test lubricants were AMSOIL Series 3000 Synthetic 5W-30 Heavy Duty Diesel Oil for the engines, AMSOIL Series 2000 Synthetic 20W-50 Racing Oil for the transmissions and AMSOIL Series 2000 Synthetic 75W-90 Gear Lube for the drive axles. The test vehicles used the test lubricants for their test segments.
All vehicles used Exxon No. 2 diesel fuel dispensed from the same storage tank for all driving segments.