trikermutha
New member
It has really no change in mpg if using higher or lower octane. But less ethanol or ethanol free does help mpg.
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Miles/Gallon on the 2020 RTL
- Thread starter bikerbillone
- Start date
IdahoMtnSpyder
Active member
What no one has posted are photos of the internals of two engines, one that always ran on regular, and one that always ran premium. Until we see an actual side by side comparison of what happens to the inside of an engine we cannot know what the affect really is of an engine run on regular when premium is recommended.
troop
Well-known member
My experience is similar to this. MPG's are basically the same whether using 87 octane/10% ethanol or 93 octane/10% ethanol. Always see a small bump of a few MPG's when using 91 octane/ethanol free.
SCWSpyder
New member
My first tank got 28 mpg , 2 up freeway miles. I don’t know how I could ride one out here at less than 70. Second tank with cruise set at 73 got 32 mpg. Then next tank 29... current tank looking slightly better. Top speed so far: 95 2-up for short blast and it was straight and stable. I broke in an ‘06 Ultra with cruise at 79 and it got 42 mpg. My 2013 GW never came close to the Harley mileage wise. Sooo am hoping Mr Spyder loosens up a bit more so can get a tad more range. And no worries of capsizing a 900# vehicle!
IdahoMtnSpyder
Active member
Tank to tank mpg is pretty much meaningless. You don't get a real read on mpg until you average out anywhere from 5 to 10 tankfuls. In the link above about my two summer mpg comparison even a 4 tank running average jumps up and down like a kid on a trampoline.
ARtraveler
R.I.P. Dwayne
:agree: x 2. Tank to tank is not an accurate measure of "true" mpg. The variances of the ride kick in. To much wind, uphill all the way, carrying more than the "usual" load, etc. etc.
The average over many tanks will give a more true picture...but...it's a fun subject to talk about from time to time.
The average over many tanks will give a more true picture...but...it's a fun subject to talk about from time to time.
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