Kris01 wrote on 06/27/16 at 17:12:19:You don't always hear pre-ignition/detonation though. I ride in blistering heat and don't have any problems with 87 octane. You are correct though. I've thought about using 89 octane in the summer months but have never done it. Once the light turns from red to green, the engine cools down to the "87 octane heat level". Yeah, it's a technical category.
![Grin Grin](/yabb2.2/Templates/Forum/new/grin.gif)
I think the sales manager is used to selling high compression sports bikes. Besides, as a sales tool, an engine that NEEDS high octane MUST be a fast one! Time to change dealerships!
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You might be right about needing to change dealers but in a relatively small city like Raleigh, there's only
one other dealer nearby and I've heard BAAAAD stories about that one. High pressure sales folks, ripping people off by doing unnecessary work, etc.
Honestly, if I can learn how to do some basic work on my S40, then I'd like to visit the dealer as little as possible. One of the first things I'd like to learn is how to clean the carburetor correctly (and maybe replace that factory petcock). I'm not very mechanically inclined but normally I pick up on new stuff pretty fast. About the only thing I've done on my cars is change the oil, rotate the tires and replace an occasional set of front brake pads.