I am building a new GT15c

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francis Labarbara

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For my Octane. Should I use an assembly lube. If so, what? This will be a new case, crank, con rod, piston and sleeve.
 
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yes you should but just enough try not to over do it but you definitely need some to slide sleeve into crankcase
 

olds97_lss

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I would definitely use something. Standard for any engine is to lube the bearings, con-rod bushings/contact points and cylinder wall while building so the first start isn't done with dry parts.
 
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ok be carefull there's a little black knot on the piston right wear the ring go's you are go to line the ring right wear the piston ring close's. at first i broke the ring so i had to order a new ring i fond out the hard way lol. once you line it up sqeez the ring and slide in piston
 

Vmansavage

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I agree with rudeman light coat of 2 stroke oil is what the motorcycle 2 strokes recommend when redoing a top end also I would also smear a thin coat on the cylinder wall and never had an issue
 
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