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c50 gas mileage

When I first bought my 2006 c50c that had 3700 miles on it I was doing poor on gas mileage. A couple of people recommended that i put a few tanks of premium gas in it, and since then I have been averaging 40 - 48 mpg. I am now attempting to run regular through it because of the gas prices and I will see if that drops the mileage any.
 

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'08 C50T with 3200 miles. 2 up riding comes in at 50 - 53 mpg, single at 55-56 mpg consistently. My riding is mostly countryside with hills. Dealer told me to only run 93 octane but considering switching to 87 for $avings, anyone have mpg comparitive numbers to see if this makes economic sense?
 

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'08 C50T with 3200 miles. 2 up riding comes in at 50 - 53 mpg, single at 55-56 mpg consistently. My riding is mostly countryside with hills. Dealer told me to only run 93 octane but considering switching to 87 for $avings, anyone have mpg comparitive numbers to see if this makes economic sense?

what does your '08 manual say is the minimum octane needed? if it's 87, you're throwing money away on each tankful. my M50 manual ('06) says 87. I use 87.
 

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Pretty much the only time you would even consider using higher octane gas is if you are getting some decel popping, that is if you have no other issues like exhaust leaks. If you wanna throw money away give it to me so I can put a few more $$ in my tank using 87.
 

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Guys, tell me if I'm wrong. The C50 gas guage has 5 bars. So I figure each bar is 1/5 of a tank of gas. So if the tank holds 4.1 gal. then each bar equals .82 gals. Last weekend I filled up and went for a putt. The 2nd to last bar went out so I stopped to refuel with the last bar showing. I had put 192.7 miles on that tank. So using 4 bars at .82 gals per bar, I used 3.28 gals. which divided into the 192.7 equals 58.75 miles per gal. This sounds a little high to me, but it is what it is. Most of the milage was country road type riding very little stop and go stuff.

Does this sound right to anyone?

:cheers:
 

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I would not count on the bars to be exact.
I reset trip 1 every refill.
50 to 54 mpg seems the average here.
I have averaged 50 for the past 20,000 miles and am happy with that.

58 mpg, would be nice.

:bluethum:
 

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Guys, tell me if I'm wrong. The C50 gas guage has 5 bars. So I figure each bar is 1/5 of a tank of gas. So if the tank holds 4.1 gal. then each bar equals .82 gals. Last weekend I filled up and went for a putt. The 2nd to last bar went out so I stopped to refuel with the last bar showing. I had put 192.7 miles on that tank. So using 4 bars at .82 gals per bar, I used 3.28 gals. which divided into the 192.7 equals 58.75 miles per gal. This sounds a little high to me, but it is what it is. Most of the milage was country road type riding very little stop and go stuff.

Does this sound right to anyone?

:cheers:
I don't think the fuel gauge indicator is linear to what is actually left in the tank. For the most accurate calculation here's what I'd do:
  1. Get on the highway
  2. Fill up the tank to maximum, this will be the reference point
  3. Zero the trip meter
  4. Ride on the highway until the low fuel indicator comes on or about 100 miles (160 kms)
  5. Pull over to a gas station and fill up to the same reference point
  6. Note the litre/gallon amount on the gas receipt
  7. Note the km/miles on the trip meter
Example calculation:
14 litres over 330 kms (or 3.698 US gallons over 205.05 miles)

Fuel consumption: 4.24 litres per 100 km
or
Fuel consumption: 55.4 miles per US gallon
 

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That's wierd.... Don't Canada and the US use the same octane rating ?
yes. the "for Canada" section above says to use 87 octane using the (R+M)/2 method. (Research Octane Number + Motor Octane Number)/2

the paragraph above refers to to octane calculated by Research Number only. (US and Canada do not use this method)
 

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why are you using 91 octane when the manual calls for 87?
I use the 91 oct because the lower stuff is alcohol (Iowa Corn) and my bike runs terrible on the stuff. Also I get around 46-48 mpg on the on the 87 oct instead of the 54-58 mpg on the 91 oct.
 

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58.75 miles per gal. This sounds a little high to me, but it is what it is. Does this sound right to anyone?:cheers:
Today I did a round trip to Cultus Lake, BC. I filled up at the lake area ($1.32/litre), after riding about 30 km on the back roads, I hit the Highway 1 and gassed up in the city again. Distance from gas station to gas station, 150.2 kms, amount of gas filled up in the city, 5.855 litres.

Fuel economy (highway): 3.898 litre/100 km
or
Fuel economy (highway): 60.3 miles/US Gallon

My bike is around 4000 kms (2485 miles) now and last year fuel consumption was around 55 mpg after the first service.
 

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Hey Elvis, where did you start from?
I try to stay off #1, I have about 600 km's on #1 and 34,000 km's on the back roads and minor highways, #7,9,11,15.

I must be heaver on the throttle as my average is just over 50 mpg US.

:bluethum:
 

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Hey Elvis, where did you start from?
I try to stay off #1, I have about 600 km's on #1 and 34,000 km's on the back roads and minor highways, #7,9,11,15.

I must be heaver on the throttle as my average is just over 50 mpg US.

:bluethum:
Hello Blackie!

here's the google map of the ride to Cultus Lake.

http://maps.google.com/maps?f=d&hl=en&geocode=5322154047224098152,49.032011,-122.735192%3B18424107581435573829,49.016898,-122.441943%3B358995684993803038,49.016949,-122.261352%3B7461576737297660416,49.073414,-122.109696&saddr=350+W+Georgia+St,+Vancouver,+BC,+Canada+(Vancouver+Public+Library)&daddr=176+St+%4049.032011,+-122.735192+to:Huntingdon+Rd+%4049.016898,+-122.441943+to:Vye+Rd+%4049.016949,+-122.261352+to:Inter-Provincial+Hwy+%4049.073414,+-122.109696+to:49.089157,-122.106857+to:Cultus+Lake,+BC,+Canada&mra=dpe&mrcr=0&mrsp=5&sz=11&via=1,2,3,4,5&sll=48.954523,-122.147369&sspn=0.385963,1.040955&ie=UTF8&ll=49.090056,-122.501678&spn=0.769828,2.081909&z=10

From Cultus Lake to Downtown Vancouver:

http://maps.google.com/maps?f=d&hl=en&geocode=17843578369283155760,49.014404,-122.041896%3B10098250296736810365,49.032817,-122.025489%3B15675140783302389460,49.272540,-123.029270%3B4864490989211660107,49.281140,-123.044060&saddr=Cultus+Lake,+BC,+Canada&daddr=Canyon+Rd+%4049.014404,+-122.041896+to:Frost+Rd+%4049.032817,+-122.025489+to:49.077689,-122.081108+to:HWY-1+W%2FTrans+Canada+Hwy+W+%4049.272540,+-123.029270+to:Renfrew+St+%4049.281140,+-123.044060+to:350+W+Georgia+St,+Vancouver,+BC,+Canada+(Vancouver+Public+Library)&mra=dpe&mrcr=2&mrsp=3&sz=12&via=3,5&sll=49.069593,-122.106857&sspn=0.192536,0.520477&ie=UTF8&ll=49.124219,-122.538757&spn=0.769298,2.081909&z=10
 

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Rode a 275 mile two up trip yesterday and tried two combo's of gas to see what the mpg results woud be. Using 93 octane we covered the first half of the journey with an outstanding 60.3 mpg. On the return we ran 87 octane with 10% ethanol (it wasn't by choice) and were aided with a net 2000' elevation drop to get a rather average 53 mpg. Just using generalizations for this less-than-scientific study we gained 12% fuel economy for a 6% price premium making the higher octane more economical. The glitch in this logic was the ethynol component. Need more tests I suppose to substantiate this one-time result.
 

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Elvis, on the way out don't turn left at 16th Ave, keep going in the left lane and turn left at 0 Ave, keep on 0, just past 264th Ave border crossing is Pioneer Park, where I live, stay with 0 till it turns up to Huntington, turn right, follow your route past the Cultus Lake turnoff , thru Vedder across the #1, thru downtown Chilliwack, right on Yale Road east till the turn off for Aggazzi, head for #7 back towards Harrison, left to Mission.
Entering Mission, take the left over the overpass, then left to head to #11,
over the bridge past Matsqui, take the right at the light, which will take you to Fort Langley.
I turn at Mt. Lehman and head north till I hit the School. turn left and follow the road till I hit River Road and turn left till I hit the Fort, turn right then left at the light then follow Glover till the Langley bypass, turn right then to the Fraser Highway.

There are a lot of nice back roads off of 0 Ave and also from the Fort area.

Perhaps sometime we can get together with Atla68 also.
Last I heard, he was buying the coffee.
PS; the Deli in Yarrow makes good sandwichs.
 

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There are a lot of nice back roads off of 0 Ave and also from the Fort area.
Hello again Blackie,

Quite frankly you live in a beautiful area and have many nice roads to ride around. I didn't know 0 Av was actually a public road and because I didn't have my passport with me, didn't bother riding towards the border.

I go out and ride spontaneously (my schedule is so messed up) so it's hard for me to make an appointment but I will certainly go to Cultus Lake again and perhaps we can meet up some time and ride together.

Cheers,

Elvis
 

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Elvis, on the way out don't turn left at 16th Ave, keep going in the left lane and turn left at 0 Ave, keep on 0, just past 264th Ave border crossing is Pioneer Park, where I live, stay with 0 till it turns up to Huntington, turn right, follow your route past the Cultus Lake turnoff , thru Vedder across the #1, thru downtown Chilliwack, right on Yale Road east till the turn off for Aggazzi, head for #7 back towards Harrison, left to Mission.
Entering Mission, take the left over the overpass, then left to head to #11,
over the bridge past Matsqui, take the right at the light, which will take you to Fort Langley.
I turn at Mt. Lehman and head north till I hit the School. turn left and follow the road till I hit River Road and turn left till I hit the Fort, turn right then left at the light then follow Glover till the Langley bypass, turn right then to the Fraser Highway.
Blackie, thanks for the directions

Based on your suggestions, I sketched a new map for the next time:

from:350 W Georgia St, Vancouver, BC, Canada (Vancouver Public Library) to:176 St @49.032466, -122.735194 to:0 Ave @49.002198, -122.713848 to:0 Ave @49.002195, -122.666469 to:0 Ave @49.002293, -122.614288 to:0 Ave @49.002265, -122.598838 to:0 Ave @49
 
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