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How much engine oil should be added to the JOG 125?

1 Answers
EllieRose
09/02/25 4:45am
Yamaha JOG requires a maximum of 1 liter of engine oil. Functions of motorcycle engine oil: The primary function of engine oil is lubrication. Inside the engine, oil lubricates pistons, bearings, and other moving parts, reducing friction and preventing component damage. Engine oil also provides sealing and cooling effects. There is a certain gap between the cylinder and cylinder wall, and the oil forms a film in these gaps, effectively serving as a seal. Precautions for adding engine oil to motorcycles: Strictly follow the brand and grade specified in the manual when purchasing lubricating oil, and try to buy from reputable stores or direct manufacturers. Be cautious of counterfeit or substandard products when selecting lubricating oil brands. Pay attention to the packaging—avoid products without manufacturer addresses or production dates. Monitor changes in oil quality and viscosity. High-quality oil is dark in color but not black, and it feels smooth, not sticky, when rubbed between fingers. Inferior oil exhibits the opposite characteristics.
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