38
·The single grade petrol is good for an area where the temperature difference between day and night isn’t
very significant.
·The comprehensive grade petrol is good for an area where there is a big difference between the
temperature in daytime and that of at night.
·The “W” (winter) refers to the cold areas.
·In order to reduce the number of times you change the oil, you’d better select the multi-stage oil.
2.
Information about the machine oil used by the Four-Stroke Petrol Engine
In order to reduce the number of times you replace of refill the fuel, you’d better select and use the
multi-stage petrol.
Requirements on the quality:
·fairly adhesiveness in high temperatures;
·fine cleaning and dispersing capacity;
·good anti-oxidation, resistance to erosion, antifriction;
·good lubricating capacity.
Cautions:
·Select an appropriate degree of adhesiveness.
·The key to use machine oil properly is to select an appropriate time to replace the oil.
·In order to prolong the life span of the machine oil, don’t mix it up with any other oil so as not to reduce
its function.
