Hi everyone, I'm a new owner of RC390 in Taiwan. I wonder which machine oil you guys choose to use. And my dealer recommend me use the Motorex because he said if you don't use the Motorex, your RC390 may be broken. Is that really? Or it's just an excuse for promoting Motorex? In my opinion, I want to use the Motul 300V. It's a lot cheaper than the Motorex in Taiwan. In Taiwan, you need to pay double the price of 300V to get Motorex. It seems to be pretty unwise to use the Motorex....... Hope you guys can give me recommendation!