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Engine oil: engine's lifeblood
Complex task in many different environments?
Performs
- Lubrication
- Cool
- Protects against
- wear
- combustion acids
- rust
- Clean
- Keeps contaminants / soot in oil
- Hydraulic fluid for injectors etc.
Engines and engine oil
The engine is composed of following parts through which the engine oil flows.
Points
- If engine is a heart, the engine oil is its blood.
- Oil circulates in the engine and performs various functions.
Functions of engine oil
Points
- Engine oil is necessary to maintain engine and enable it to function
How gasoline engine works
- Gasoline engine produces power by repeat combustion of air-fuel mixture.
- The air-fuel mixture is ignited by a spark at the spark plug.
Why new generation engine oils?
Significant changes in engines: stresses oil
Increasing
- engine power
- oil drain intervals
- sump temperatures
Reducing
- sump size
- lower oil consumption
And finally biggest factor....
- engine designs to meet low emission standards
Causes of engine failures
- Improper maintenance
- Incorrect oil used
- Failure to change contaminated oils
- Sludge deposits
- Build-up of varnish
- Oxidation & thickening of oil
- Abrasive elements
- Additive depletion
- Oil pump failure
Why engine oil must be changed?
- ctly as they each meet different performance requirements.
Why ATF and CVTF must be changed?
Deterioration of ATF and CVTF
The following are causes of ATF and CVTF deterioration:
- Oxidation caused by the heat from driving
- Consumption and breakdown of additives
- Accumulation of moisture, metal wear particles and sludge
Symptoms Caused by Deterioration
The following symptoms will occur if the ATF or CVTF deteriorates.
- Reduced acceleration
- Reduced fuel efficiency
- Increased shift shock
Points
- ATF and CVTF need regular replacement to keep them in the best condition.
