We all know that an IC Engine consists of various metal parts and that they are made up of different
metals and alloys like forged iron , aluminium etc. When engine is manufactured, these parts are not
fully finished and have slightly rough texture. Due to this in an initial stage, an engine is not running
smoothly because there’s more friction between its sliding parts.
Engine oil is employed for providing lubrication to the engine parts. In initial stages this rough chips
from different parts are separated due to friction and engine parts will get smoother. These chips
are over excited by engine oil, so its quality is degraded in a brief span of time. So it is necessary to
replace the contaminated oil, so to make sure smooth running of engine.
The engine must be lubricated continuously so that the metal components aren’t grinding against
one another and creating excessive heat. Regular oil changes carry away dirt, dust, and other
contaminants that can clog up the engine parts and the most important thing engine oil does is to
prevent most of the metal-to-metal contacts inside your engine. The pump forces oil at high
pressure into bearings: crankshaft-to-block, rod-to-crankshaft, camshaft-to-block, etc to form the
parts ‘float’. The oil’s viscosity plays an important role here, controlling how readily it will flow into
these ultra-tight clearances as well as how well it resists getting squished and squeezed out.
The following points are to be understood clearly by all vehicle owners:

  1. Why oil required: Oil lubricates the parts of the engine in order that they don’t grind against each
    other; keeps the engine from overheating; and carries away dirt, dust, and other contaminants that
    might otherwise clog up the engine parts.
  2. The right interval: The car care interval required for your vehicle will vary depends on its age, the
    sort of oil used, and your driving conditions. The 3,000 mile interval isn’t as relevant, as in years gone
    with today’s upgraded oils, the interval for many engines is now between 5,000 to 7,500 miles. You
    could also go as far as 15,000 miles if you employ full synthetic oil.
  3. The dash warning light: Some dash lights are programmed to return on automatically at 3,000-
    5,000 miles after the last car care. In some cars, this light won’t come on until the engine is already
    too low on oil, so don’t believe the dash red light alone.
  4. Temperature matters: Certain motor oils are designed to be thinner when cold and more viscous
    when hot. The Society of Automotive Engineers has developed designations that indicate the
    viscosity of the oil, for instance, 10-30W oil. The “10” refers to the lower viscosity when the engine is
    cold. The “30W” refers to the upper viscosity when the engine is hot and running normally.
  5. Conventional, premium, and synthetic oils: Certain high-tech engines require synthetic oils, while
    more majority engines usually use conventional oils. Premium oils have extra additives that may be
    useful for special driving needs. Blends that combine synthetic and premium conventional oils are
    often used for SUVs and trucks.

In the case of car maintenance and repair, oil change plays a major role because your engine
performance depends on engine oil.
Engine oil has a lifespan determined by a complex set of factors including its type, quality, longevity
and price of the oil. Draining your engine oil and replacing the filter at regular service intervals
ensures that the maximum amount of the contaminants within the oil is removed regularly to stop
engine wear, reduce friction, improving fuel economy and preventing the build up of sludge, varnish
and damaging carbon deposits ,metallic engine particles while removing the by-products during the
combustion process by creating an oil film which protects the surfaces between all moving parts to
lower temperature and friction. Replacement of the oil with the correct winter viscosity and
expected ambient temperature viscosity between oil changes, as well as very specific requirements
and parameters which meet a carefully balanced package of detergents, dispersants, polymers,
viscosity index improvers, pour point and anti foaming additives, friction modifiers and selected
additive package levels to guard the engine under almost all driving conditions and designed to
reduce pollution are very important to the life of the engine. Engine oil is available to meet the
needs of almost every vehicle manufacturers and the vast range of engine types, designs and fuels
from the everyday motor car to racing cars, boats, chain saws and trucks and mining equipment and
aerospace technology. Engine Oils made from crude oil base stocks or totally man made synthetic
engine oils particularly in Group 4 and 5, far exceed the requirements of most other oils in most
areas of engine lubrication except price. And even solid lubricants like Boron Nitride, P.T.F.E,
Graphite, Molybdenum disulfide and lots of others to satisfy the changing demands placed on
lubrication now and into the longer terms.
Here are the advantages of oil change for your vehicles.
• Motor oils contain antioxidants which limit exposure to oxygen for critical moving parts. Oxygen
can lead to rust and corrosion.
• Synthetic motor oils can go for much longer between changes and outperform conventional oils in
every respect. Synthetics don’t degrade and lose their lubricating properties as quickly and may flow
better at lower temperatures.
• Moisture tends to accumulate in an engine’s crankcase, and gasoline will boil off this condensation
because it heats up and therefore the engine reaches operating temperature. For cars driven but ten
miles per day, though, it’s recommended that the oil be changed more frequently to avoid the
damage that comes from frequent cold start-ups.
• Better engine performance: Oil changes help keep the internal moving parts of your engine clean
and lubricated, allowing for a smoother, quieter ride.
• Keeps dirt and waste from building up: Old oil will have a certain amount of debris and junk in it,
which can damage parts of your engine, especially if your drive in dirty or dusty conditions. Changing
the oil and the filters will help to keep these nasty little particles out of your engine, and protect
your engine’s vital components from their harm. The higher the quality of oil, the cleaner your
engine will be.

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