Re:Bad Gas. Hot or Cold? - K-Bikes.com - Excellence in Motion
 
LinkBack Thread Tools Display Modes
post #1 of 4 (permalink) Old Sep 2nd, 2007, 11:39 pm Thread Starter
Enthusiast
 
Join Date: Jul 2003
Location: , ,
Posts: 316
Re:Bad Gas. Hot or Cold?

Owing to a series of circumstances I never anticipated, after filling my bike up at the service station last June and riding home and plugging in the battery tender I never rode it again until today! The tank was full but I did not have any fuel stabilizer in it, but down here in Florida it's for the most part quit hot and humid and as the bike ran perfectly fine today in spite of the fact that it's been setting in my garage for the last 2 months or so, it did make me wonder what is worse on fuel stability and it's ultimate brake down after setting a long time, is it the cold or the heat? I don't plan on letting my bike set for great periods of time but it does seem to happen to me because of my work circumstances. I did get a chance to put quite a few good miles on today and then put in a couple of gallons of fresh fuel into it but just for future reference does heat brake down gas quicker causing varnish and other harmful effects or does the cold do that quicker? Thanks for the info.:-)
007007 is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old Sep 3rd, 2007, 1:48 pm
Addict
 
The Fllash's Avatar
 
Join Date: Jan 2005
Location: Las Vegas, Nevada, USA
Posts: 513
Here is what I found out.

Stability

Yes, Gasoline does have an expiration date. When gasoline is stored, gums will form, the result of copper-catalyzed reactions of the unsaturated HCs. Antioxidants and metal deactivators are added to slow this down, but after six months the fuel has degraded enough to be no longer good for use. Another problem with gasoline aging is many of the performance and octane additives such as aromatic hydrocarbons evaporate and leave a fuel that delivers less performance than fresh fuel.



Why are there seasonal changes in Gasoline?

Only gaseous hydrocarbons burn, consequently if the air is cold, then the fuel has to be very volatile. But when summer comes, a volatile fuel can boil and cause vapor lock, as well as producing high levels of evaporative emissions. The solution was to adjust the volatility of the fuel according to altitude and ambient temperature. The oil companies without informing the public of the changes have automatically performed this volatility change for decades. It is one reason why storage of gasoline through seasons is not a good idea. Gasoline volatility is being reduced as modern engines, with their fuel injection and management systems, can automatically compensate for some of the changes in ambient conditions - such as altitude and air temperature, resulting in acceptable driveability using less volatile fuel.
The Fllash is offline  
post #3 of 4 (permalink) Old Sep 4th, 2007, 1:12 pm Thread Starter
Enthusiast
 
Join Date: Jul 2003
Location: , ,
Posts: 316
Re:Thanks!

Wow six months? I guess I didn't have much to worry about? I thought gas started to go bad in only 6 weeks. I can only guess what kind of condition my poor old Honda is going to be in after setting three years and I still can't go get it! At least I don't have to concern my self to much with the K12 it's going to end up setting a couple months again this Fall while I'm traveling for work and if I think of it I'll try and have some fuel stabilizer in it but if I know me I'll forget. Thanks for the info.:-)
007007 is offline  
Sponsored Links
Advertisement
 
post #4 of 4 (permalink) Old Sep 4th, 2007, 2:12 pm
Addict
 
Join Date: Mar 2004
Location: , , UK
Posts: 3,750
Bazra - fine contribution to how gas degrades.

I can only add some practical empirical experience. I'm aware that the volatiles evaporate because my garden equipment with low compression small motors get really difficult to start when gas is left in a season.

As I'm lazy (and don't try this on your K bikes) I just put in a capfull of cellulose paint thinner or methylated spirit and it fires up first time. Perhaps somebody will offer the chemical explanation!

I can appreciate how big a problem this is if bikes are stored for very long periods with full tanks. Over here we had bad gas killing off hundreds of O2 sensors in cars which were all breaking down. The biggest problem for the workshops was they had no disposal facilites for bad fuel.

If I was laying a bike up over 6 months, I think I'd just tender the battery, drain the tank and put the gas in the car.



Never pay again for live sex! | Hot girls doing naughty stuff for free! | Chat for free!
voxmagna is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the K-Bikes.com - Excellence in Motion forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
A ride tale Arr2Kay Bike Talk 8 Dec 1st, 2010 3:42 am
Cold weather S riding? kkugel K12/1300S 27 Jan 7th, 2008 11:39 pm
Fall Is Here: A Cold Day on the BRPW Pirate Ride Tales 10 Dec 3rd, 2006 4:19 pm
Throttle Management and Cold Starting aa3jy K12/1300S 8 Jan 29th, 2006 4:12 pm
Cold tire questions- CDPerry K12/1300S 3 Dec 10th, 2005 1:48 pm

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome