Hi All, I'm just wanting to complete some general maintenance on my machine and have a few questions; 1. What is the difference between fully synthetic, semi-synthetic and mineral engine oils? 2. What should I put in my bike? - its a Yamaha YZF-R125 The only thing I can find on my manual is to use 10w40 and "API Service SG Type or higher, JASO standard MA" I ride maybe 2-4 times a week max, and usually only casual rides around town, I usually give it a bit but don't thrash the guts out of it. I'm currently looking at - Motul 7100 10W40 and Motul 5100 10W40 but can't figure out the difference. Also, does anyone know what oil filter I need for this bike - I can't find anything on my manual - it just says "Paper type".