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Main Area => General GS500 Discussion => Topic started by: bluerocket_gs500f on February 23, 2013, 03:10:45 PM

Title: Switching from 91 octane to regular 87
Post by: bluerocket_gs500f on February 23, 2013, 03:10:45 PM
Hey guys,

Ok so, this is embarassing. When I bought my GS500f last year, I could have sworn the guy I got it from said he was putting 91 octane in it. I have been putting 91 in it since then, with no problems. Now after bothering to look into it, apparently this bike is designed for 87 regular octane fuel. So my question is, how do I transition to it, considering the bike is currently running on 91?

Any suggestions?  :oops:
Title: Re: Switching from 91 octane to regular 87
Post by: applecrew on February 23, 2013, 03:19:30 PM
Just start filling it with the 87 octane. No harm in that - that's how the middle grades are made - they are mixed at the pump! Your wallet will thank you. Been running my 2007 on 87 octane for 65,000 miles without any problems!

Cheers!
Title: Re: Switching from 91 octane to regular 87
Post by: bluerocket_gs500f on February 23, 2013, 04:41:44 PM
Ah ok, I wasn't sure if I had to drain it or fill it at half-way. By the way, we have pretty much the same ride, looking good!
Title: Re: Switching from 91 octane to regular 87
Post by: slipperymongoose on February 23, 2013, 05:48:28 PM
Just don't put diesel in lol that's when you'll hurt it
Title: Re: Switching from 91 octane to regular 87
Post by: gsJack on February 23, 2013, 05:52:37 PM
Don't put in diesel gas but diesel oil is good for the GS.   :icon_lol:
Title: Re: Switching from 91 octane to regular 87
Post by: slipperymongoose on February 23, 2013, 05:54:21 PM
Quote from: gsJack on February 23, 2013, 05:52:37 PM
Don't put in diesel gas but diesel oil is good for the GS.   :icon_lol:


Yeah that lol
Title: Re: Switching from 91 octane to regular 87
Post by: bluerocket_gs500f on February 23, 2013, 06:48:49 PM
Lol, good to know. Thanks guys!!  :woohoo:
Title: Re: Switching from 91 octane to regular 87
Post by: Zwerski on February 23, 2013, 09:21:14 PM
The GS is a blue-collar bike: regular gas, regular oil.
Title: Re: Switching from 91 octane to regular 87
Post by: slipperymongoose on February 24, 2013, 12:45:17 AM
And irregular riders lol
Title: Re: Switching from 91 octane to regular 87
Post by: Janx101 on February 24, 2013, 03:43:54 AM
Quote from: slipperymongoose on February 24, 2013, 12:45:17 AM
And irregular riders lol

Some more than others..... Which brings me to ... Where is Mister on this thread? .. He usually can't resist making mudpies in fuel or oil threads!?  ;)
Title: Re: Switching from 91 octane to regular 87
Post by: Twisted on February 24, 2013, 04:09:54 AM
I never run anything less than 98 in my bikes (http://www.ozbikers.com/phpbb2/images/smilies/reeling-smiley.gif)
Title: Re: Switching from 91 octane to regular 87
Post by: ohgood on February 24, 2013, 05:18:58 AM
Quote from: Twisted on February 24, 2013, 04:09:54 AM
I never run anything less than 98 in my bikes (http://www.ozbikers.com/phpbb2/images/smilies/reeling-smiley.gif)

lol
Title: Re: Switching from 91 octane to regular 87
Post by: Watevaman on February 24, 2013, 06:13:38 AM
110 only. triples the power and increases burnout potential tenfold.
Title: Re: Switching from 91 octane to regular 87
Post by: xunedeinx on February 24, 2013, 12:48:39 PM
110 low lead aviation gas. Makes you FLY!!!
Title: Re: Switching from 91 octane to regular 87
Post by: Janx101 on February 24, 2013, 04:01:06 PM
Quote from: xunedeinx on February 24, 2013, 12:48:39 PM
110 low lead aviation gas. Makes you FLY!!!

oh come on!!.. tell the truth!!!!!!!!!!! ... dont be telling the man that avgas alone makes you fly ... you also need those fibreglass aileron sleeves sewn onto your jacket!!  :icon_rolleyes:
Title: Re: Switching from 91 octane to regular 87
Post by: weedahoe on February 24, 2013, 05:13:14 PM
I use 93 in mine because my truck is custom tuned for it and because I keep several extra gallons on hand in cans in the shop. Like today, there was a group ride, before I left I topped off my tank with 93 from one of my cans. I very rarely fill my bike up at a station.

87 will burn just fine though. These aren't high tech performance engines
Title: Re: Switching from 91 octane to regular 87
Post by: slipperymongoose on February 24, 2013, 05:36:17 PM
How did you get mod status with that kind of potty mouth? This is ground breaking technology!
Title: Re: Switching from 91 octane to regular 87
Post by: Janx101 on February 24, 2013, 05:44:18 PM
I had a thought.... (yes i did!) .. with Fuel type overtones...

Movie, The Fastest Indian .. at Bonneville the old chap takes his heart tablet (nitroglycerin as they used to use/still use?) .. and also puts a 'nitro' pill in the tank of the bike before his run ...

would this work? ... has anyone tried it? ... if it would work then what kind of performance gain/modification (if any) would happen or was he after?

Nitroglycerin like a lot of chemicals has many different uses according to concentration/volume , application intended and method of delivery .. (same as high spurts of nitrous oxide makes vehicles go fast but low spurts makes pain go away temporarily at hospitals) ..

thats my "Can of Worms" for the day  :thumb:
Title: Re: Switching from 91 octane to regular 87
Post by: slipperymongoose on February 24, 2013, 05:52:08 PM
I rekkon write the mythbusters and ask them to do it.
Title: Re: Switching from 91 octane to regular 87
Post by: Janx101 on February 24, 2013, 06:00:19 PM
good point... unless they have already.... do they still exist?... i know we keep getting "new" episodes .. but sometimes its still couple years since... hmmmm
Title: Re: Switching from 91 octane to regular 87
Post by: Twisted on February 24, 2013, 06:11:55 PM
Quote from: Janx101 on February 24, 2013, 05:44:18 PM
I had a thought.... (yes i did!) .. with Fuel type overtones...

Movie, The Fastest Indian .. at Bonneville the old chap takes his heart tablet (nitroglycerin as they used to use/still use?) .. and also puts a 'nitro' pill in the tank of the bike before his run ...

would this work? ... has anyone tried it? ... if it would work then what kind of performance gain/modification (if any) would happen or was he after?

Nitroglycerin like a lot of chemicals has many different uses according to concentration/volume , application intended and method of delivery .. (same as high spurts of nitrous oxide makes vehicles go fast but low spurts makes pain go away temporarily at hospitals) ..

thats my "Can of Worms" for the day  :thumb:

A pill poppin GS? Poor bike doesn't have arms to scratch itself when it gets the itches from withdrawals
Title: Re: Switching from 91 octane to regular 87
Post by: Janx101 on February 24, 2013, 06:21:16 PM
yeah true... but would it go ripping off stereos from cages for the next fix?  ;)

years ago my ex-Brother In Law had a TL1000 .. did 'some jets and some stuff' to it .. but i wasnt listening properly .. however he also used to mix in some Methyl Benzine with the fuel to 'improve' things .. from memory it was 150ml of Benzine to 10 litres of fuel but that could be way off...

the bike did go pretty hard .. and had lovely note from the twin full bore Yoshi's

i suppose Methyl Benzine and Nitroglycerin both have been used in some form as an attempt to go faster... how effective.. dunno..

Dont reckon Benzedrine would be any good though ... bike would be way too twitchy, highly strung and prone to running across 4 lane freeways at random!!  :icon_rolleyes:
Title: Re: Switching from 91 octane to regular 87
Post by: jjcardozo86 on February 24, 2013, 06:47:28 PM
Speaking of adding stuff to fuel, do you guys run additives in your gas? ive been told that star-tron is pretty good and to run a mixture in your tank all the time.  :dunno_black: Thoughts?
Title: Re: Switching from 91 octane to regular 87
Post by: Twisted on February 24, 2013, 07:06:24 PM
Quote from: Janx101 on February 24, 2013, 06:21:16 PM
yeah true... but would it go ripping off stereos from cages for the next fix?  ;)

Mine the type of GS that would be sticking a leg out on a street corner. Total hussy.
Title: Re: Switching from 91 octane to regular 87
Post by: Janx101 on February 24, 2013, 07:08:34 PM
Quote from: Twisted on February 24, 2013, 07:06:24 PM
Quote from: Janx101 on February 24, 2013, 06:21:16 PM
yeah true... but would it go ripping off stereos from cages for the next fix?  ;)

Mine the type of GS that would be sticking a leg out on a street corner. Total hussy.

oh aye!? ... how much 'per ride'  :icon_mrgreen:
Title: Re: Switching from 91 octane to regular 87
Post by: slipperymongoose on February 24, 2013, 08:23:19 PM
I used to put a shot of upper cylinder lube in the tank every now n again keeping that upper cylinder lubed up nice n lubricated
Title: Re: Switching from 91 octane to regular 87
Post by: weedahoe on February 25, 2013, 12:35:19 AM
I add nothing in my fuel. I've been inside every engine I've ever owned and never seen the need of it
Title: Re: Switching from 91 octane to regular 87
Post by: xunedeinx on February 26, 2013, 03:53:39 AM
I used to drop .50mg of xanax in the Tank of my zx-636.

She was twitchy, clicky, like to rev really high. It smoother out her power band and made her more manageable.
Title: Re: Switching from 91 octane to regular 87
Post by: Janx101 on February 26, 2013, 03:56:42 AM
Xanax you say ... Hmmm .. Is that castrol or Exxon? ... And do they make a similar product for Missus-es?  ;) :D