I have owned a Yamaha YZF-R15 for the last two years, and have been using Yamaha lube for my engine ever since. Would you recommend changing the engine oil from Yamaha lube to Mobil 1 or Motul?
Sanjay, via email
AAA It is safest to stick to the same engine oil, Yamaha lube, as you’ve been using till now for your Yamaha YZF-R15, given that this is company recommended and made specifically for this motorcycle.