Gas Level Increased After Fill-up and Overflowed

[Twism86]

I just pay credit at the pump to avoid going inside, so if it comes out to $6.37 or something like that i dont care.

[twocool]

I like to run on res for a while.. at $2.80+ / gallon (91 oct) i regularly put in 8 or 9 dollars.  Also, I usually pay at the pump w/ my debit card.. So, yeah it's totally an ocd habit from when i used to pay cash and didn't enjoy having pockets and ashtrays full of change all over the place. 

Hey, whatever suits you!   People all have their own customs, routines, superstitions, etc....

(seems like everybody wants the tank EMPTY....when its empty, on reserve and running on fumes....gotta get every last drop of the evil old gas out of there before fill up.........then we have to fill it up, I mean FULL  every last drop that will fit, shake it a fill some more.....but end on an even dollar, or else!)  LOL



Now, you know I want to argue with you about that 91 octane.......(your are just throwing away money!!)


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[Elijafir]

Yeah.. I know all the arguments about 91 vs. 87 vs 101 vs whatever blah blah blah.. I notice the difference in knock and the difference in mileage.   To me the extra 20-25 cents per gallon.. (3 gallons to fill up.. ohhhh nooo..) is worth it.  The bike is air cooled.. it is 100+F on a regular basis where I live.. The emission tag says 91+ octance.. so yeah.. i worry about pre-ignition.  Oh well.  It's my money!

[twocool]

Yeah.. I know all the arguments about 91 vs. 87 vs 101 vs whatever blah blah blah.. I notice the difference in knock and the difference in mileage.   To me the extra 20-25 cents per gallon.. (3 gallons to fill up.. ohhhh nooo..) is worth it.  The bike is air cooled.. it is 100+F on a regular basis where I live.. The emission tag says 91+ octance.. so yeah.. i worry about pre-ignition.  Oh well.  It's my money!

Your engine knocks on 87?   Then you have an engine problem, not a gas problem.

Your mileage is better on 91?   Please explain how this is possible.......(is your engine "stock" or modified?)

What does air cooled have to do with octane?

What does ambient temperature have to do with octane?

What is an "emission tag"?

"Worry" about pre-ignition, or you "got" preignition?  There is a difference.

Inquiring minds need to know!

Extra $.25 is not much IF it actually DID something.......

There are many better ways to waste money IMO..........

But hey, It's a free country....do what ever makes you happy!

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[Elijafir]

Your engine knocks on 87?  -  It seems louder when I run 87 octane.. I have very acute hearing.. Maybe it's the 10% Ethanol in the 87?  Maybe I just THINK it's knocking.. whatever.

Your mileage is better on 91?   I don't constantly keep track of my mileage.. but when I was filling up every day (riding 100 miles a day) it seemed like I was getting about 5mpg better on the 91.. It might not warrant the extra .25 but it makes me feel like the engine is running "better."  The Engine is not modified to my knowledge.  It has a K&N Lunchbox on it.. I don't know what the jets are in it. Stock Exhaust.  Maybe it's the 10% Ethanol in the 87?

What does air cooled have to do with octane? What does ambient temperature have to do with octane? "Worry" about pre-ignition, or you "got" preignition?    Air cooled engines tend to run a little bit hotter than liquid cooled engines.. Ambient air temperature contributes to the running hotter.  A hotter engine is more likely to pre-ignite the fuel.  I do worry about pre-ignition from my engine being hotter than what I would consider "average." I don't think I have it though.  Better safe than sorry. 

What is an "emission tag"?  That tag under the seat that has emissions information. 99% of vehicles in the United States have an emission tag under the hood (or under the seat on motorcycles.)

Extra $.25 is not much IF it actually DID something.......  It makes me feel better.  That makes it worth it to me.
At .75 per 150 miles.. It's costing me a half a cent a mile.  I don't think $5 every thousand miles is going to break the bank.  I believe whole heartedly that the way we feel about our vehicles affects the performance and longevity of our vehicles.  So, if it makes me feel it makes my bike run good and last longer.  I don't care how much science has gone into the argument of 87 octane vs 91 octane.  Seriously.. $0.75-$1.50 a week.. I could save that up all my life and when I'm 228 years old I can buy that GSXR I've been wanting...

[twocool]

Your engine knocks on 87?  -  It seems louder when I run 87 octane.. I have very acute hearing.. Maybe it's the 10% Ethanol in the 87?  Maybe I just THINK it's knocking.. whatever.

Your mileage is better on 91?   I don't constantly keep track of my mileage.. but when I was filling up every day (riding 100 miles a day) it seemed like I was getting about 5mpg better on the 91.. It might not warrant the extra .25 but it makes me feel like the engine is running "better."  The Engine is not modified to my knowledge.  It has a K&N Lunchbox on it.. I don't know what the jets are in it. Stock Exhaust.  Maybe it's the 10% Ethanol in the 87?

What does air cooled have to do with octane? What does ambient temperature have to do with octane? "Worry" about pre-ignition, or you "got" preignition?    Air cooled engines tend to run a little bit hotter than liquid cooled engines.. Ambient air temperature contributes to the running hotter.  A hotter engine is more likely to pre-ignite the fuel.  I do worry about pre-ignition from my engine being hotter than what I would consider "average." I don't think I have it though.  Better safe than sorry. 

What is an "emission tag"?  That tag under the seat that has emissions information. 99% of vehicles in the United States have an emission tag under the hood (or under the seat on motorcycles.)

Extra $.25 is not much IF it actually DID something.......  It makes me feel better.  That makes it worth it to me.
At .75 per 150 miles.. It's costing me a half a cent a mile.  I don't think $5 every thousand miles is going to break the bank.  I believe whole heartedly that the way we feel about our vehicles affects the performance and longevity of our vehicles.  So, if it makes me feel it makes my bike run good and last longer.  I don't care how much science has gone into the argument of 87 octane vs 91 octane.  Seriously.. $0.75-$1.50 a week.. I could save that up all my life and when I'm 228 years old I can buy that GSXR I've been wanting...

I gotta say, at least you are honest, and honest with yourself.   Your conclusions are, however, based on "touchy-feely, feel good" stuff, and not on any scientific, engineering, or widely accepted fact........but that's ok....

Running higher than required octane has (typically) no bad effect on the engine, other than wasting a small amount of money.........

I ride partly (mostly) for economy.........plus the fun comes on top of that for free.........

I did 6000 miles in the last two months since the bike was new.......so If I used high octane it would have costed me an extra $25.........not much, but that matters to me......$25 is $25......(10%)   then on top of that I seem to get much better mileage than most......66 mpg average over 6000 miles......this is 10% to 20% better than most.....probably due to my driving style, and long commute without stop and go traffic......It all adds up eventually, to keep the operating costs low..........



I have ridden quite a few days at 100* ambient...............no knock.......

The increase of octane required because of high ambient temp is very little...GS 500 should not knock at 100* F

ethanol in gas does have certain effects, but if the octane rating is the same, (87) it will not cause engine knock.....ethonal does cause a slight decrease in fuel mileage.

keep riding, and keep having fun..........

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