Engine Lubrication
WARNING: This page is about a different car, the 2008 Dodge Magnum, 2008 Dodge Charger, and 2008 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
| 1 - TO RIGHT CYLINDER HEAD | 5 - OIL FILTER |
| 2 - TO LEFT CYLINDER HEAD | 6 - TO CRANKSHAFT MAIN JOURNALS |
| 3 - OIL PUMP | 7 - MAIN OIL GALLERY |
| 4 - OIL PICKUP TUBE |
Oil from the oil pan is pumped by a geroter type oil pump (3) directly coupled to the crankshaft. Oil pressure is controlled by a relief valve mounted inside the oil pump housing. Refer to Cylinder Block, Left Cylinder Head or Right Cylinder Head graphics between the charts for engine oil lubrication circuits.
| FROM: | TO: | FROM: | TO: |
|---|---|---|---|
| Oil Pump | Oil Filter Mounting (inlet) | Main Oil Gallery - Center of Block | 1. Crankshaft Main Bearings |
| Oil Filter Mounting (inlet) | Oil Filter | 2. Left Cylinder Head* | |
| Oil Filter | Oil Filter Mounting (outlet) | 3. Right Cylinder Head* | |
| Oil Filter Mounting (outlet) | Oil Gallery - Right side of Block | Crankshaft Main Bearings | Connecting Rod Bearings |
| Oil Gallery - Right side of Block | Oil Gallery - Rear of Block and to Oil Cooler (some models) | Left Cylinder Head | Refer to Left Cylinder Head Graphic |
| Oil Gallery - Rear of Block | Main Oil Gallery - Center of Block | Right Cylinder Head | Refer to Right Cylinder Head Graphic |
| *The cylinder head gaskets have an oil restrictor to control oil flow to the cylinder heads. | |||
| 1 - CAM JOURNALS | 4 - OIL FEED FROM BLOCK |
| 2 - OIL FEED TO CAMSHAFT (SECONDARY) CHAIN TENSIONER | 5 - VENT HOLE |
| 3 - LASH ADJUSTER BORES | 6 - ACCUMULATOR |
| FROM: | TO: |
|---|---|
| Left Cylinder Head Oil Inlet Gallery (intake side of head) | Oil Gallery and Accumulator - Rear of Head* |
| Oil Gallery and Accumulator - Rear of Head* | 1. Exhaust Camshaft Oil Passage |
| - | 2. Intake Camshaft Oil Passage |
| Left Exhaust Camshaft Oil Passage | 1. Left Exhaust Camshaft Journals |
| - | 2. Hydraulic Valve Lash Adjusters and Rocker Arms |
| 3. Left Camshaft (Secondary) Chain Tensioner** | |
| Left Intake Camshaft Oil Passage | 1. Left Intake Camshaft Journals |
| 2. Hydraulic Valve Lash Adjusters and Rocker Arms | |
| * When oil reaches the back of the cylinder head, the oil gallery feeds oil into an accumulator chamber that is located towards center of the head. The accumulator chamber is closed off with a pressed in core plug that has a small orifice to act as a vent. Oil then travels down at a 45 degree angle from the accumulator into two passages, one for the intake and one for the exhaust side of the cylinder head. | |
| ** The secondary camshaft chain tensioner is the last component to receive oil on the left cylinder head. | |
| 1 - OIL FEED TO CAMSHAFT (SECONDARY) CHAIN TENSIONER | 5 - VENT HOLE |
| 2 - OIL FEED TO TIMING CHAIN (PRIMARY) TENSIONER | 6 - OIL FEED FROM BLOCK |
| 3 - CAM JOURNALS | 7 - LASH ADJUSTOR BORES |
| 4 - ACCUMULATOR |
| FROM: | TO: |
|---|---|
| Right Cylinder Head Oil Inlet Gallery (intake side of head) | Oil Gallery and Accumulator - Rear of Head* |
| Oil Gallery and Accumulator - Rear of Head* | 1. Exhaust Camshaft Oil Passage |
| - | 2. Intake Camshaft Oil Passage |
| Right Exhaust Camshaft Oil Passage | 1. Right Exhaust Camshaft Journals |
| - | 2. Hydraulic Valve Lash Adjusters and Rocker Arms |
| 3. Right Camshaft (Secondary) Chain Tensioner | |
| 4. Primary Timing Chain Tensioner - Right Head** | |
| Right Intake Camshaft Oil Passage | 1. Right Intake Camshaft Journals |
| 2. Hydraulic Valve Lash Adjusters and Rocker Arms | |
| * When oil reaches the back of the cylinder head, the oil gallery feeds oil into an accumulator chamber that is located towards center of the head. The accumulator chamber is closed off with a pressed in core plug that has a small orifice to act as a vent. Oil then travels down at a 45 degree angle from the accumulator into two passages, one for the intake and one for the exhaust side of the cylinder head. | |
| ** The timing (primary) chain tensioner is the last component to receive oil on the right cylinder head. | |