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YZ450RDR

Synthetic Motorcycle Oil

2 posts in this topic

Which oil to run Amsoil MCF 10W-40 or MCV 20W-50?? MCF in winter MCV in summer? 2008 YZ450F MX 95% trail 5%.

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MCF is adequate up to ambient temps of 110 degrees. I prefer to run MCV in the warmest 3 months of the year when the temperature is consistently over 90, however.

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