GN2 is the original Honda's own 2T performance oil sold for the NSR in Japan. i bought it in Japan and took some to the USA, i think it is actually semi-synthetic, but in stock trim the NSR is not that stressed, since the engine is restricted.

I actually have been running my MC28SP on GN2 and is running well, never fouling plugs, etc.

I heard that Castrol TTS is not that good, and some people complained about it. Is that right?

M A T T A S I N A R I
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MATT ASINARI
MC28 R3T REPSOL
Location New York City/Connecticut