How and when do I inspect the oil on my YZ426? Right aftir I stop the motor or when. If I inspect it 5 min aftir I stop the engine then it is on the mark but next day it is way below the mark....

regards ZeColleman

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I would say have it on the 'half-way' mark on the stick when its cold, and check it every time you use it, as its a dirt bike it would be harder to detect an oil leak because of all the muck and crud,