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Here's how engine oil lubricates your car's engine!

In this video, we will learn the importance of engine oil and how it flows from bottom to top and back down again through your car's engine lubrication circuit.

The purpose of engine oil is to lubricate and cool moving components. In this video, a VQ35DE Nissan / Infiniti 3.5L V6 engine was taken apart and its lubrication system is detailed.

Starting at the bottom, the oil pickup tube sucks oil into the oil pump, which is driven off the crankshaft. The gerator oil pump has a built in spring loaded pressure valve that returns excess oil back to its inlet. After running through the pump, oil is sent through the crank case to the oil filter, where it circulates past the oil cooler. It then flows back through the timing cover, and is sent to the main engine galley and the VVT gears in the engine head. The crankshaft main bearings, cylinder wall sprayers, connecting rods and piston heads all draw off the main engine galley that run down the middle of the engine's "V" shape. Camshaft bearings and timing chain tensioners are lubricated by secondary oil galleys tapping off the main galley, while the VVT solenoid has its own independent path.

Given the amount of small passages and tight tolerances in a modern engine, the type, amount and frequency of replenishment of engine oil is very important. Abuse and defective engine components could lead to excessive oil consumption or starvation resulting in a spun bearing or complete engine seizure.

Make sure you change your engine oil frequently!

Here's where to get OEM oil filters:
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Engine oil:
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This is the oil filter wrench I use:
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Oil Drain pan:
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Oil products to check out:
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This is where my brother gets his toothbrushes from:
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This is the Camera I use:
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