2nd Gen Ram Tech 1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.

Gas Octanes, What is the deal?

Thread Tools
 
Search this Thread
 
  #1  
Old 05-30-2010, 10:38 AM
tuski's Avatar
tuski
tuski is offline
Professional
Thread Starter
Join Date: Feb 2009
Location: Trevor, WI
Posts: 155
Likes: 0
Received 0 Likes on 0 Posts
Default Gas Octanes, What is the deal?

So this isn't really related to any specific vehicle, although what does the different grades of fuel do, or what effect do they have? 87, 89, 91.... Does anyone know if there's a noticeable difference between them?
 
  #2  
Old 05-30-2010, 04:52 PM
Huntjunkie41's Avatar
Huntjunkie41
Huntjunkie41 is offline
Professional
Join Date: May 2010
Location: Va Beach
Posts: 156
Likes: 0
Received 0 Likes on 0 Posts
Default

It has been proven that higher Octane gas (89-91) does not provide any better fuel economy or power, although some will still say it does. Higher Octane gas is meant to be used in cars with higher compression ratios (like race cars) to prevent premature detonation and that pinging noise. Engines that run hotter may also benefit from using it for same reason. In the western part of the states where temps are higher this may be recommended. Toyota and nissan recommend using it, but not 100% necessary.
 
  #3  
Old 05-30-2010, 08:43 PM
tuski's Avatar
tuski
tuski is offline
Professional
Thread Starter
Join Date: Feb 2009
Location: Trevor, WI
Posts: 155
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Huntjunkie41
It has been proven that higher Octane gas (89-91) does not provide any better fuel economy or power, although some will still say it does. Higher Octane gas is meant to be used in cars with higher compression ratios (like race cars) to prevent premature detonation and that pinging noise. Engines that run hotter may also benefit from using it for same reason. In the western part of the states where temps are higher this may be recommended. Toyota and nissan recommend using it, but not 100% necessary.
Well, well, well... I guess i spend 20 cents more for gas than i needed too.
 
  #4  
Old 05-30-2010, 09:45 PM
bbeck4x4's Avatar
bbeck4x4
bbeck4x4 is offline
Registered User
Join Date: Apr 2010
Posts: 2
Likes: 0
Received 0 Likes on 0 Posts
Default

Octane is the fuel's ability to resist detonation explained here http://www.eejitsguides.com/environm...el-octane.html
 
  #5  
Old 06-09-2010, 11:01 AM
Patsfan's Avatar
Patsfan
Patsfan is offline
Professional
Join Date: May 2010
Location: Ontario Canada
Posts: 199
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by bbeck4x4
Octane is the fuel's ability to resist detonation explained here http://www.eejitsguides.com/environm...el-octane.html
Good read.. thanks.
 



Quick Reply: Gas Octanes, What is the deal?



All times are GMT -4. The time now is 10:42 PM.