........and boy is my rear portion sore!

[red2003]

Well I just got back from the first long ride of the season. I put 120 miles on after work today. Roketa ran like a champ. I had to fill up right before I left and right before I got home. First tank was 88 mpg, second was 92 mpg. I have no idea why the change in mileage this season. Last year I averaged between 70 and 75 mpg, this year in four tanks of fuel so far I have yet to get below 80??? The mileage is confirmed and ACCURATE and the only thing I have changed is the oil. I now run a straight 30 weight, I was running a 5w30 or 10w30. I am running the same roads, same driving style, and the same rider weight (if not a little more :? ) Whatever it is, I am loving it. Smiling all the way to the bank. Now if I could only get my lounge chair mounted on the bike some how................

[Dragon]

What's the difference between "straight 30" and 10w30?

[montanaoffroader]

Straight 30w oil is thicker at low temps than 10w30. The advantage to multi-viscosity oils such as 10w30 etc. is that they flow better at low temps, which means your engine gets oil faster on a cold start. The disadvantage is that the additives in the multi-vis oil tend to break down over time, which means that if you don't change your oil often enough or you get it too hot (that could NEVER happen with an air-cooled engine! ) your oil will thin out and you could have lubrication problems. Hope this clears it up for you. :wink:

Mike

[Dragon]

Maybe you've been riding with the wind behind your back a lot.

[GY_Racing]

Originally Posted by Snake

Maybe you've been riding with the wind behind your back a lot.

LMAO! Or maybe he is drafting more

[alonzo]

I am in the same boat, I am running a 2007 lifan gy 5, I have done the C clip adjustment and that is it. I got 110 miles per gallon last fill up. not sure what the issue is. I weigh about 180 pounds. and do a lot of heavy stop and go driving. I checked the spark plug, it is a nice color of brown/tan. So it is not running lean. Is my bike a freak?!?!?!?

[red2003]

I honestly don't get it. It has nothing to do with the change in oil I am sure. I was very pleased with 75 mpg last Summer, but I wont complain abotu 80's or 90's. The last tank yesterday was at a steady 55 mph for an hour and a half, so that would explain why that tank was better, but all others have been 15 mile commutes on the same roads I always ride. I love the looks at the gas station when the next guy pulls up and sees your fill up was $3.80 .

[kczukiman]

Do you think maybe a change of mixture in the gas supplier from where you purchase your gas?Higher octain,ethanol ?

[red2003]

Originally Posted by kczukiman

Do you think maybe a change of mixture in the gas supplier from where you purchase your gas?Higher octain,ethanol ?

THAT is a distinct possibility. In fact, when I filled up earlier yesterday I remember thinking it smelled weird. Actually it smelled like old stale gas, but whatever. It ran well. I'll keep you guys posted. I have not heard of any gas mixture changes in our area, and I filled up at two different stations 85 miles apart yesterday, but who knows???

[a1a5115]

Well I have heard that gas companies make a "winter" blend and a "summer" blend. The winter blend is more volatile for easier starting and the summer blend is less so. Maybe the summer blend yeilds better milage.

[kczukiman]

Originally Posted by a1a5115

Well I have heard that gas companies make a "winter" blend and a "summer" blend. The winter blend is more volatile for easier starting and the summer blend is less so. Maybe the summer blend yeilds better milage.

I would think just the opposit?

[TheBrainII]

Alonzo,
These bike clock km/kmph in most case. I would think 110mpg is all but impossible on one of these 200cc bikes. 110kpg is more realistic. Or, you really have a 50cc motor in there.

[culcune]

Originally Posted by kczukiman

I would think just the opposit?

Actually, California was one of the first states to mandate winter/summer gasoline (winter was Oct. 1 - Feb. 30 or something like that). I remember the winter stuff gave slightly less mileage vs. the non-winter stuff. When it first came out, the winter additive was MTBE or something like that, but I remember mileage was worse in the winter, which was questioned as defeating the purpose of cleaner gas.

[ambassador]

On alot of the gas pumps here in Fla. they have a sticker on the pump that reads "10% ethanol mix", haven't tried it in the bike yet but my car runs fine with it...

[alonzo]

Originally Posted by TheBrainII

Alonzo,
These bike clock km/kmph in most case. I would think 110mpg is all but impossible on one of these 200cc bikes. 110kpg is more realistic. Or, you really have a 50cc motor in there.

Thanks, I am sure my bike is nice and healthy then. I don't really treat the bike very nicely, matter of fact I run it like it was my old rd 400, 68 mpg sounds about right.