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Posted

they spec. the 2S for oil injection/post mix (blaster) and 2R for pre-mix, dunno the exact difference, i kind got away from the 2R and have been using castor 927 for a while...

Posted

I started to use castor 927 but I was riding my banshee everyday pretty much all day for about a month on my lake behind my house a couple of weeks ago and the castor was just to expensive to buy everyday. I have been using the 2S (I still am) without fouling any plugs of anything at all. I recently saw the yamalube 2R in the store where I usually buy the 2S. Thats why I asked.

Posted

Yeah the yamalube works great. I have used it in my 99 since she was new and still on the stock top end. The 2S is for the oil injection unit on the Blaster, so I would steer clear. I'm not sure if it would hurt anything but just use the 2R.

Posted

2R works well. I'm not sure if it's a good idea to mix it 50:1 or 100:1 though. I keep it 32:1 and thats probably the only advice i follow from yamaha corp. It keeps the crank happy.

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