I too use Motul 300V and can get 4L shipped from the US at $54.00. Here locally, it's going for Y13,600 (around $175). 1L of Motul 710 is Y3,600 (around $55).

So even an oil change on a big bike will cost $200+ even DIY!

Dana
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2016 Husqvarna 701SM
2021 Husqvarna FS450 supermoto
2014 Honda CRF250R supermoto
1995 NSR250r MC28