what octane????
#11
#13
RE: what octane????
ORIGINAL: Mattcmdr
yea well im a 19 year old college student soo i dont have the money to be running 91 octane all the time soo i was wondering if anyone was running the performance setting on 87????
yea well im a 19 year old college student soo i dont have the money to be running 91 octane all the time soo i was wondering if anyone was running the performance setting on 87????
$3.14 for 87...times that by 25 gallons...$78.50
$3.24 for 89...times that by 25 gallons...$81.00
$3.34 for 91...times that by 25 gallons...$83.50
#14
#16
RE: what octane????
I've calculated it myself, when I had my little 4 banger Hyundai, it was more economical to run 87 octane, I got a fraction of a mpg better with 89, but the 10 cents higher cost didn't offset the minimal gain.
My truck, however, running 93 octane with the performance tune gave me the best economy for my $ than any other combo. It turned out to beabout 3 cents a gallon cheaper than paying twenty cents less a gallon and using the economy tune. Plus a whole lot better performance!
Same with my '03 Grand Cherokee Overland, it has the High Output 4.7 and gets enough better mpg's running 93 octane that it offsets the 20 cents cost difference as well and that's without having a tuner for it.
My truck, however, running 93 octane with the performance tune gave me the best economy for my $ than any other combo. It turned out to beabout 3 cents a gallon cheaper than paying twenty cents less a gallon and using the economy tune. Plus a whole lot better performance!
Same with my '03 Grand Cherokee Overland, it has the High Output 4.7 and gets enough better mpg's running 93 octane that it offsets the 20 cents cost difference as well and that's without having a tuner for it.
#18