Mixing Octanes

[rt2barbers]

Am I the only member who has absent-mindedly picked the 89 octane nozzle and pumped several gallons before realizing and completing the fil-up with 93? Just a sort of academic question........do the octanes average? If we mix 1 gallon of 87 with 1 gallon of 93 is the result 2 gallons of 91 octane?

 

[FASTLLS]

Yes they average.. It's like putting octane booster in.. I usually mix 93 and 89.. I put in 93 and when it's at like 3/4, fill it up again with 89. Then run empty and restart the process..

 

[Quik LS]

Yes they average.. It's like putting octane booster in.. I usually mix 93 and 89.. I put in 93 and when it's at like 3/4, fill it up again with 89. Then run empty and restart the process..

what?
18gallon tank
3/4 of premium @ $2.82
1/4 of regular @ $2.59

so you save $0.23 on 4.5gallons = $1

you are joking right?

 

[pektel]

I always fill with 91, for the exact reason Quik posted. It's only a couple bucks on a full tank. Why skimp on something that the car NEEDS?

But, that's just me. I also normally don't pay more for higher octane if 91 is available.

 

[1LoudLS]

Am I the only member who has absent-mindedly picked the 89 octane nozzle and pumped several gallons before realizing and completing the fil-up with 93?

no this has happend to me once or twice. the premium is almost always the farthest to the right, EXCEPT for this one brand of gas station that i almost never go to except when im almost out of gas, and there premium is the farthest to the left, tricky bastards.

i do however commonly make the mistake of putting 93 in my girlfriends cavalier all the frickin time!

 

[pektel]

I hear that. I have put premium into the gf's blazer more times than I've put the correct 87 octane in it lol.

 

[owlman]

To quote Dale Gribble, "Burn is burn"

 

[FASTLLS]

what?
18gallon tank
3/4 of premium @ $2.82
1/4 of regular @ $2.59

so you save $0.23 on 4.5gallons = $1

you are joking right?

Hey.. That whole dollar helps when you have a kid.. No.. I did it a few times to get that little bit more of gas but I usually run 93.. I am the kind of person who runs the tank always full.. If it goes around 3/4, I am putting gas in it.. When I got laid off for the winter, no money and the LS saying low fuel didn't make me very happy.. Now it's all good though.. I will emerge with a new exhaust and a full tank of fuel.. lol :lol:

 

[CobraStar_LS8]

93 burns slower

 

[Lincoln Jealous]

i stay with nine trey