I've tried motul transoil, motul transoil expert, gro synth, castrol mtx, motul 7100, castrol ATF, silkolene synth gear oil, delo 400, bp farm oil and belray gear saver in my 2011 and 13 300s.
For me castrol mtx has the least squawk and longest good feel at the lever and easiest to find neutral. It's also well priced in Australia. Mobil took castrol (bp) to court and won over what they were calling synthetic, mtx is now labelled semi synthetic.
All IMHO, and oils are different place to place. Hope tat gives some sort of insight.
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Oz
Current. 2015 ec300r estart, 98 RM 125
2013 Ec300r 2011 Ec300e 2009 Husky TE310
1982 XR500 Honda 1981 KE100 Kawasaki
1978 GT80 Yamaha
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