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Home » Public Forums » GMCnet » Fuel milage (Fuel octain)
Fuel milage [message #89305] Sun, 20 June 2010 11:52 Go to previous message
RickOH is currently offline  RickOH   United States
Messages: 29
Registered: December 2006
Location: Coshocton OH
Karma:
Junior Member
I have never seen any discussion about octane levels but this is what I found. I have always used regular 87 octane fuel since the engine dosen't seem to ping on it and I'm kind of a tight-wad. Was returning recently from Caloun GA meet and the last fuel fillup somewhere in KY, I decided to hit the 93 octane button.

I didnt notice anything special til we got close to home and started climbing some hills that I'm very familiar with. Normally with the cruise control set at 62 mph, the hills would drag me down to the 45-50 mph range. With the 93 octain the difference was amazing. Speed only dropped 3-4 mph.

Haven't had a chance to check fuel milage since, but I can't help think that it's got to be better. With 93 octain usually running about 20 cents more per gal than reg, the extra cost would only be about $8.00 per fillup. But getting an extra 80 miles per fillup would save about $25.00

Has anyone else checked this out?

Rick Little
78 Royale
Coshocton OH

 
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