7 It measures the engine’s cleanliness, resistance to oxidation and wear protection. JASO 4 STROKE STANDARD: JASO 2 STROKE STANDARD: It measures the level of friction. OIL TYPES: API 4 STROKE STANDARD: It measures lubrication power, engine cleanliness and reduction in smoke emissions. Low friction means lower fuel consumption for dry clutch scooters. A high level of friction avoids the risk of slipping and ensures optimal clutch operation. JASO MA2 JASO MB • 100% synthetic • Semi-synthetic + • Semi-synthetic • Mineral
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