Engine Description 2.3 Oil Circuit 1 Oil sump 2 Intake manifold 3 Oil pump 4 Main oil duct 5 Oil-cooled cylinder 6 Cylinder head cooling neck 7 Oil duct for rocker arm lubrication 8 Rocker arm 9 Oil manifold for the thermostat 10 Intake to external engine oil cooler 11 Return from external engine oil cooler 12 Thermostat housing with slide thermostat 13 Oil duct to oil filter 14 Oil filter 15 Oil duct to the cam, con-rod and crankshaft bearing 16 Injection jet for cooling the pistons 17 Oil return via crankcase to the oil sump 18 Lube oil intake to turbocharger 19 Turbocharger 20 Return from turbocharger to oil sump 26 430 0 20 19 18 7 6 5 1 4 3 2 16 18 11 8 15 9 2.3.1 Lube Oil Circuit Schematic 17 14 10 12 13 20 2