87 to 89 Oct. Gas

[Flip-er]

OK I know this has been beaten before BUT
I made the switch from 87 to 89 3 tanks ago and noticed a 3-4 mpg gain.
truck is a quad cab 2013 4x4 with the 5.7 hemi
wonder what I will get come winter here in N.C
Driving Cond. and habits are the same as well.

 

[DannyMK2]

i went from using 89 to 87 octane and noticed no difference in power or fuel mileage.

 

[jcat]

expect about a 10-20% loss in winter mix fuels in cold regions.

I'm not looking forward to it here since I'm averaging 16 currently.

 

[jbr]

OK I know this has been beaten before BUT
I made the switch from 87 to 89 3 tanks ago and noticed a 3-4 mpg gain.
truck is a quad cab 2013 4x4 with the 5.7 hemi
wonder what I will get come winter here in N.C
Driving Cond. and habits are the same as well.

I saw 2 mpg decrease with winter blend.
Winter 12.5-13.5, now about 14.5

 

[loveracing1988]

I average mid 16's to low 17's in the summer. This last winter I averaged mid 12's to 14.

 

[Moparman1303]

I've been running 89 since new. Runs like a champ! Not sure if I went 87, if I would loose anything?

 

[BlownGP]

Haven't really noticed a mpg difference and I've used all three. 87,89,93.
Now it does feel sluggish on 87

 

[Pigeonman]

Still working my way through my first tank of 89 after switching. Not really noticing any difference in performance. Have to wait and see on the mileage.

 

[smokinstorm]

I try to run at least 89 in the Summer though I have not seen any gas mileage difference between the 87 and 89. I get a little spark knock on 87 at the track hot lapping and that kills performance though. 93 from now on when running at the track.

 

[Flip-er]

cool guys and thanks for the responses.
i noticed my gains on second tank, hating what i am reading about the winter blend tho

 

[13Ram1500EXP]

i saw 2 mpg decrease with winter blend.
Winter 12.5-13.5, now about 14.5

ditto!!!!

 

[Kidder]

I have seen no difference between 87 and 89. More than 1 mpg increase is perceived only.

 

[Oilbelcher]

Octane has less if impact than ethanol content. So glad I don't have to worry about performance robbing ethanol now (buying diesel).

 

[loveracing1988]

Octane has less if impact than ethanol content. So glad I don't have to worry about performance robbing ethanol now (buying diesel).

Mileage robbing sure, but performance robbing no.