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Choke kill the bike?

  • Thread starter Thread starter Killer2600
  • Start date Start date
Yes, if you actually hear knocking that's bad, but it won't be caused by unleaded gas.
 
Killer2600 said:
yes I should use 87 octane but my cousin who is a motorcycle mechanic and the previous owner who is a marine engineer both recommended that I use premium because the bike is old and air-cooled.
Click to expand...

I understand wanting to believe your cousin over strangers here in the forums, but in my brief time here has shown these guys not only love their GSs but they know what they are talking about too.

If there is no benefit to the higher octane why bother? I also avoid the ethanol fuel too. I suppose in the summer if you are riding a lot maybe it wouldn't be a problem but if your fuel system isn't 100% and/or you are storing it for the winter I wouldn't use it.

Also if you are seeing better fuel mileage with the higher octane (unlikely) it would be so small of an improvement that it wouldn't justify the extra cost.

Not to say there is no benefit to higher-octane fuel. I use it in my VW GLI. It was designed for it (the manual says so). And my VW isn't 30+ years old.
 
I've had all of my friends tell me "throw some premium in there, she'll run like a scalded dog!" Mind you those same friends roll their eyes when I tell them that I adjusted the valves and did a complete tear down on the carbs and rebuilt brakes and what not. "If it aint broke, don't fix it" they say. Makes no sense. Leave crusty, rusted and ready to fail parts on, but put gas that isn't meant for these motors in it for a performance increase. :rolleyes: I guess it's a good example of just how much people misunderstand what premium gas really is. They talk like it's nitrous or something.

I tried premium once. ONCE. I noticed nothing different except a slightly lighter wallet. I probably might have noticed more if I knew how to identify pinging.
 
Gonzo said:
I've had all of my friends tell me "throw some premium in there, she'll run like a scalded dog!" Mind you those same friends roll their eyes when I tell them that I adjusted the valves and did a complete tear down on the carbs and rebuilt brakes and what not. "If it aint broke, don't fix it" they say. Makes no sense. Leave crusty, rusted and ready to fail parts on, but put gas that isn't meant for these motors in it for a performance increase. :rolleyes: I guess it's a good example of just how much people misunderstand what premium gas really is. They talk like it's nitrous or something.

I tried premium once. ONCE. I noticed nothing different except a slightly lighter wallet. I probably might have noticed more if I knew how to identify pinging.
Click to expand...

Pinging sounds like shaking a can of marbles. If you engine isn't doing it, premium is worse than regular. For a GS engine to ping with it's now compression, something is wrong that needs fixing, not just more expensive fuel.
 
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