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I was reading the inside of the side cover and noticed the label said 91octane. Does anyone use 91 if so what difference do u see. is the mileage better? also it says to use leaded fuel. does anyone put a lead additive in the tank?
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79 XS1100F
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Others may do differently, I use 87 octane and no lead additives. Runs great all day long. I average about 36 MPGLife is what happens while your planning everything else!
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81 XS1100 Special - Humpty Dumpty
80 XS1100 Special - Project Resurrection
Previously owned
93 GSX600F
80 XS1100 Special - Ruby
81 XS1100 Special
81 CB750 C
80 CB750 C
78 XS750 -
No lead additive needed having hardened seats. An article explains the RON thing with fuel. that 91 number was derived differently 30+ yrs. ago. 87 would be its equivelent now. Aside from that, if the truth be known, these ole' scoots would run on kerosene.Originally posted by virstens View Post81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.Comment
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