Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Lubrication System
- Cylinder head
- Cylinder block
- Intermediate section
- Oil sump
- Crankshaft
- Oil filter
- Camshafts
Oil is led from the oil sump via a suction nozzle to the oil pump, which is located on the crankshaft. The oil pump suction function is facilitated by a purge valve that eliminates any air from the system.
The oil is pumped on to the oil cooler system and then on to the oil filter. The oil is led from the filter through a cast oil duct in the intermediate section to the main bearings. The oil is distributed to the big-end bearings via drilled channels in the crankshaft.
The camshafts receive their oil supply via drilled channels in the cylinder block. The channels continue up through the cylinder heads where they open out on the underside of the lower half of the cylinder head. There is a cross channel in the channels to the cylinder heads which leads oil to the pistons. From here the oil is moved further via the oil channels to the intake camshaft bearings and valve lifters.
The exhaust camshaft bearings are supplied via two cast cross channels at the front of the upper halves. The oil is led via drains in the block from the cylinder heads and from the crankshaft bearings back to the oil pan.
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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