Motor Oil: Overfilled and underfilled

Most people know it is bad to use your vehicle on underfilled motor oil condition. Still, there is tendency to find out how low that is still 'safe' to use the vehicle in underfilled condition.

In contrast, curiousity also arouse: what if we overfilled the engine.

Underfilled: Bad
Not enough lubrication and circulation of heat.

Overfilled: also Bad
Why? The engine will have to work extra 'hypertension' to distribute oil 'our blood' to the whole engine, the engine will feels heavier and generate extra heat. Another factor you must avoid is theoverfilled engine will caused foaming. The submerged crackase stir oil in the engine and caused foaming (volatile with alot of air bubbles) within the oil, thus the engine will be distributing air bubbles instead of oil. (For human: air bubbles in blood vessel is fatal).

Remember to use the engines if only you they are filled with at least 25% above the dipstick!

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Oil Cooler

Oil not only lubricate but the also carry heat, hotter oil means hotter machine and that decrease its lubricating effect thus lower engine performance. Oil coolers are used in many gasoline engine and diesel engines and as well as in gearbox (tranmission). It helps to lower the oil temperature to a relative cooler, normally is air cooled from the air flowing across an automobile.

Remember: Oil not only lubricate but also needed to cool and disperse heat away from engine parts, i.e. bearings and high-rev components.

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Clean your engine inside out

For many reasons and whatever reasons, many car owner want to clean the internal engine, flushing out residual oil along with decade-old deposit. Many techniques, tools and chemicals are used to get rid of the dirt in your engine.

After some research and googling, I conclude that...

1. Chemical flushing is very dangerous to your engine. Not all engine and material in the engine are universal, some chemicals may harm your engine parts, i.e the gaskets, rubber parts, seals. Remember that the materials that made up your engine parts vary and might react to the chemical cleaner as most are meant to INTENSIVELY flushing out carbon. Ironicly, some materials in engine are made of carbon (your fuel line etc) ... might be harmful and be corroded.

2. Alternative to that, some use double draining technique by draining the engine twice. At the second drain, to use cheap engine oil/ oil filter for the in between period. I would say is OKAY but make sure it comes from reputable sources. You don't want your car engine oil turns 'puding', the cheap engine oil might not be engine oil after all - fake/recycled.

3. Recommendation.... (not liable on me, just a suggestion) use engine oil for diesel engine for cleaning. Why? The engine oil for diesel engine has more additive (detergent) coz diesel engine makes more deposit. Drain this oil after running your engine for awhile, some claim for several to ten of kilometers. I EMPHASISE is ENGINE OIL FOR DIESEL ENGINE not DIESEL!

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