哇勇 asked in 汽車與交通維修 · 1 decade ago

YAMAHA的機油

請問YAMAHA的4M機油它的4是指4行程那他的M是指啥?

是像機油等級的SG SJ SL SM 的SM的M的等級嗎?

還是只是指MAJESTY專用油的M?

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