View Poll Results: What Grade Of Fuel Do You Use?
87
300
64.38%
90
55
11.80%
93
107
22.96%
Ethanol
4
0.86%
Voters: 466. You may not vote on this poll
Fuel Grades
06-06-2006, 12:17 PM
#21
Banned
Join Date: 10-14-2005
Location: Rochester,N.Y.
Posts: 9,121
Originally Posted by Firewatcher
Now, I bet the Captain can point out a thread but I'm gonna ask anyway....I know that ethanol is bad news unless your engine is specifially designed for it, but what about 10% ethanol? It seems all of the stations around here have changed to it. Will we (2.2 and 2.4 owners alike) suffer any damage from this? 
http://en.wikipedia.org/wiki/Flexible-fuel_vehicle
06-06-2006, 01:39 PM
#23
Senior Member
Join Date: 01-21-2006
Location: United States
Posts: 120
I answered 90, but I hardly ever see 90.
I have the 2.4, so I always run at least 89... haven't noticed a performance or mileage increase with higher octane.
I have the 2.4, so I always run at least 89... haven't noticed a performance or mileage increase with higher octane.
Last edited by HHR Nut; 06-06-2006 at 06:31 PM.
06-06-2006, 03:36 PM
#28
Platinum Member
Join Date: 05-09-2006
Location: "Upland" Mesa, Arizona
Posts: 6,805
Originally Posted by captain howdy
10% Ethanol isn't a problem.
http://en.wikipedia.org/wiki/Flexible-fuel_vehicle
http://en.wikipedia.org/wiki/Flexible-fuel_vehicle
A study conducted by GM about 10 years ago, indicated that almost 60% of the questions asked in the dealer service area, was answered in the owners manual of the respective vehicle.
I participated in that study/survey.
06-06-2006, 05:06 PM
#29
Senior Member
Join Date: 12-21-2005
Location: Launch Coast Calif.
Posts: 1,010
Originally Posted by SindyDix
..and what is involved in this 'tune'?
Custom tuning.. to the ECM..
air/fuel mixture adjusted (usually performed when exhaust/air intake is done) , shift preference, speed limiter open up,
rev limit up a tab bit more, firmer shift, Octane adjusted, rev limiter lifted out of gear...
06-06-2006, 06:29 PM
#30
Member
Join Date: 05-09-2006
Location: Missouri
Posts: 86
I used 87 to start but now I use 93 because there is a station that sells it for 16 cents over Regular compared to the 20-24 cents over at other stations. As far as performance it does seem to run a little better and I noticed a 2-2 1/2 MPG increase over Regular --- before the road construction came, now I sit in 3-6 miles of stop and go traffic nearly every afternoon and I am still getting about 1/2 MPG better.