Gas Issue

[flipmo]

Does anyone out there know whether or not there is some special formula for determining this or just simply know whether or not race fuel or for that matter, any fuel, that's saved up for an extended period of time actually loses it octane rating overtime. Say 116 and lower that's been sitting in a drum for 6 months. After 6 months guys, do you still think the rating is still 116 or whatever the original octane rating was? Inquiring minds want to know.

Thanks

Flipmo

[flipmo]

Wow, know one has knowledge or experience of this issue. So everyone is running either Razor, SMC, DIY Alky, Propane, or Water Injection, hmmmm??? I too will be adding Razor's kit soon but just wanted to know in general whether or not gas either maintains or looses it octane rating over time while setting up (i.e. say six months or more), specifically race gas.

Thanks guys and let me know

[bruce]

Originally Posted by flipmo

Wow, know one has knowledge or experience of this issue. So everyone is running either Razor, SMC, DIY Alky, Propane, or Water Injection, hmmmm??? I too will be adding Razor's kit soon but just wanted to know in general whether or not gas either maintains or looses it octane rating over time while setting up (i.e. say six months or more), specifically race gas.

Thanks guys and let me know

You're never going to get much with writttings like that. Not everyone reads the list everyday, and then at times, those that do, only have a limited amount of time to spend replying, so yes you might have a post that goes unanswered for more then a day, heck some guys seem to only write on the weekends......


But, to answer your question, gasoline is brew of many chemicals, and they all have different boiling points. That's in part why we have winter and summer brews of gasoline. You want a fuel with a higher boiling point in the summer so it doesn't evaporate overnight, and then a lower boiling point in the winter since it's less likely to evaporate, and makes the engine easier to start. Two major terms used in gasoline, are low end aromatics, and high end aromatics (the terms vary slightly by company). But, it's a blend of these classes of chem that give you the *octane rating*. Any gas that sits over a week or 10 days has drastically lost it's advertised octane rating.

This is a huge subject, and if you want to get really into it, googling for gasoline, aromatics, benzene, tolulene, and other chemicals that you turn up will lead to even more info.. Be sure to look for MSDs, for the various chemicals.

[flipmo]

Originally Posted by bruce

You're never going to get much with writttings like that. Not everyone reads the list everyday, and then at times, those that do, only have a limited amount of time to spend replying, so yes you might have a post that goes unanswered for more then a day, heck some guys seem to only write on the weekends......


But, to answer your question, gasoline is brew of many chemicals, and they all have different boiling points. That's in part why we have winter and summer brews of gasoline. You want a fuel with a higher boiling point in the summer so it doesn't evaporate overnight, and then a lower boiling point in the winter since it's less likely to evaporate, and makes the engine easier to start. Two major terms used in gasoline, are low end aromatics, and high end aromatics (the terms vary slightly by company). But, it's a blend of these classes of chem that give you the *octane rating*. Any gas that sits over a week or 10 days has drastically lost it's advertised octane rating.

This is a huge subject, and if you want to get really into it, googling for gasoline, aromatics, benzene, tolulene, and other chemicals that you turn up will lead to even more info.. Be sure to look for MSDs, for the various chemicals.

Thanks Bruce and exactly the info I was looking for. O.K., I'll try to be a little more patient but you know how it is sometimes. The "Tantrum Smily" speaks for itself (I want the answer now - LOL). I was thinking for a moment just maybe noone didn't have any knowledge or experience of this gas issue thing on this board, which is sometimes the case on any board you know. Good advice though.

Thanks Again

[TURBOTWIN2]

Any gas that sits over a week or 10 days has drastically lost it's advertised octane rating.

Can you explain how this happens in layman's terms? You mean the C16 I bought at the race track 2 weeks ago is now what octane. Temps here in the 40's to 60's.

[Razor]

Originally Posted by flipmo

Does anyone out there know whether or not there is some special formula for determining this or just simply know whether or not race fuel or for that matter, any fuel, that's saved up for an extended period of time actually loses it octane rating overtime. Say 116 and lower that's been sitting in a drum for 6 months. After 6 months guys, do you still think the rating is still 116 or whatever the original octane rating was? Inquiring minds want to know.

Thanks

Flipmo

I dont know the answer cuase I dont worry bout it

Wrong forum to ask bout race gas

[flipmo]

Originally Posted by Razor

I dont know the answer cuase I dont worry bout it

Wrong forum to ask bout race gas

Hey Razor, and how are you man? You're probably right that this may not be the correct forum; however, I thought I would get the best responses from this particular forum since it's somewhat related in nature and theory. Probably though should be in "General Turbo Buick Tech," hmmm? Thanks

Razor, looking forward to getting the kit and when I do I too will not worry about this gas issue thing anymore. You guys are right, race gas is definitely a pain in the @ss either way you look at it. TURBOTWIN2 busted me and I gotta find a way now to sale this race gas I got to some of these ricers around here who drive their car everyday and all day (rain, sleet, snow, ice, etc...)

Thanks all for the info

flipmo