INTRODUCTION
Engine oil Engine oil has been specified as per its performance classification and viscosity classification. Performance classification under: American Petroleum Institute (API)
Viscosity classification The ambient temperature and type of operations at the place where the machine will be used are decisive in determining Society of Automotive Engineers (SAE) viscosity class. • Exceeding the low temperature limit will not cause engine damage; but may cause some starting difficulties. • It is convenient to use universal multi-range oils to avoid the need to change oil due to ambient temperature. • It is possible to use a synthetic engine oil if the performance and viscosity classifications of the oil correspond to the recommended mineral oils. • The oil change intervals used must be the same as those for mineral oils. • To make starting at temperatures below 0 °C (32 °F) easier, the engine manufacturer recommends SAE 10W-30 oil.
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