The Engine Room

At DeepDiesel, We make diesel engine knowledge easy—for owners, operators, enthusiasts, and pros at every level.

Choose the right oil for your engine.

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Author
Eng Abbass El Moussawi
Dec 24, 2025

Engine oil is the lifeblood of your engine. Choosing the correct oil isn’t just routine maintenance—it’s a decision that directly affects performance, reliability, and engine lifespan.


A proper lubrication system plays a critical role in keeping your engine healthy by:

   1- Lubricating all moving parts to minimize wear and extend engine life.

   2- Helping cool the engine by carrying heat away from critical components.

   3- Sealing piston rings, maintaining compression and engine power.

   4- Cleaning the engine, holding dirt and contaminants in suspension until oil is drained.

   5- Neutralizing harmful acids formed during the combustion process.

   6-  Reducing friction, improving efficiency and fuel economy.

   7- Preventing rust and corrosion, protecting internal metal surfaces.


The risk of using the wrong oil:
Using a bad or unsuitable oil can lead to serious and costly damage, such as:

  1- Clogged oil passages caused by sludge, deposits, and oil greasing.

  2- Broken mechanical parts due to the oil’s inability to properly cool critical components.

  3- Excessive wear in cylinder liners, eventually forcing a major engine overhaul.


Choosing a cheap or improper oil does not necessarily mean you are saving money. It often results in unexpected failures, and expensive repairs that far exceed the initial cost difference.

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