DODGE RAM FORUM - Ram Forums and Owners Club! - Dodge Truck Forum

Go Back   DODGE RAM FORUM - Ram Forums and Owners Club! - Dodge Truck Forum > Dodge Ram Forum - Mod Zone - Custom Dodge Ram Mods - Dodge Ram Performance > Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8


Notices

Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI® V8 engine - 390 horsepower, 407 lb-ft of torque.


Latest Vendor News
AutoAnything
Addictive Desert Designs!
Bayou Goat Mounts

Reply
 
Thread Tools
  #1  
Old 03-24-2013, 01:55 AM
RepentaRAM777 RepentaRAM777 is offline
Dodge Ram Forum Junior Member
 
Join Date: Jun 2012
Location: Cochrane, Alberta
Age: 21
Posts: 32
Gender: Male
Vehicle: 2004 Dodge Ram 1500
Trim Level: SLT
Color: Silver
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
Rep Power: 0
Rep:10
RepentaRAM777 is on a distinguished road
Default 87 vs 89 Octane fuel?

So i'm just wondering what would be better fuel wise, going 87 octane or 89? I get a 5cent/L discount at work(Safeway), but does it increase my fuel economy or should i just use 87 and not bother with 89?
Reply With Quote
Sponsored links
  #2  
Old 03-24-2013, 02:25 AM
Chris b's Avatar
Chris b Chris b is offline
Dodge Ram Forum Senior Member!
 
Join Date: Aug 2012
Location: Monroe,LA
Posts: 1,468
Gender: Male
Vehicle: 2012 RAM
Trim Level: R/T
Color: Bright White
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 2
Rep:312
Chris b is a jewel in the roughChris b is a jewel in the roughChris b is a jewel in the roughChris b is a jewel in the rough
Default

I'm not sure but I think the hemi call's for 89.
__________________
SPONSORED BY
BULLY'S PERFORMANCE
K&N 63cai\Fastman 84mm\BT catch-can\e-fan\180 t-stat\Flowmaster super44\Belltech 2"-4" 964sp\BT custom shifter\20% tint\light blue racing stripes\BD pillar pod\Diablo trinity\Hemifever custom tune\two Memphis 10" subs\custom ported box\Memphis 600amp\Weathertech techliner\MBRP 5" tips\ ARH 1 7/8 long tube headers
Reply With Quote
  #3  
Old 03-24-2013, 11:35 AM
HOTRODHARLEY's Avatar
HOTRODHARLEY HOTRODHARLEY is offline
Dodge Ram Forum Senior Member!
 
Join Date: Feb 2013
Location: EDMONTON, AB CANADA
Age: 32
Posts: 228
Gender: Male
Vehicle: 2013 Ram factory order
Trim Level: ST
Color: BLACK
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 2
Rep:256
HOTRODHARLEY is a jewel in the roughHOTRODHARLEY is a jewel in the roughHOTRODHARLEY is a jewel in the rough
Default

I run 91 because its guaranteed to not have any Ethanol in it. I too fill up at Safeway with the 5 cent discount. I believe 89 is the same but I can't be sure.
__________________
Belltech 3"/5" Lowering kit. Belltech Rear Swaybar, Flowmaster Y Pipe, Custom 4" Single Exhaust w/ 4" Race Magnaflow, 22" SRT10 Wheels, Moroso Catch Can, Undercover SE Tonneau Cover, Weathertech Techliner Bedliner, Diablosport Trinity w/ Hemifever Tune
Reply With Quote
  #4  
Old 03-24-2013, 11:57 AM
Grubrunner's Avatar
Grubrunner Grubrunner is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jan 2012
Posts: 4,240
Gender: Male
Vehicle: 2014 Jeep Grand Cherokee SRT8
Rep Power: 12
Rep:3872
Grubrunner has a reputation beyond reputeGrubrunner has a reputation beyond reputeGrubrunner has a reputation beyond reputeGrubrunner has a reputation beyond reputeGrubrunner has a reputation beyond reputeGrubrunner has a reputation beyond reputeGrubrunner has a reputation beyond reputeGrubrunner has a reputation beyond reputeGrubrunner has a reputation beyond reputeGrubrunner has a reputation beyond reputeGrubrunner has a reputation beyond repute
Default

Chrysler's usage of 89 octane grade is a recommendation and NOT a requirement.

Do some of your own testing over a couple of tankfull or so and note the differences between the two [mileage, idel, power, etc]. You may just find there is next to no diference at all..... as I did.

I used 89 octane top-tier fuel for almost a year of ownership. I then closely monitored the points mentioned above over five or so tankfulls on each grade. I found next to NO differences between both fuel grades [purchased from the same station during the analysis].


I'm not tight, but I most certainly don't just give money away without a return of some type..... unless it's for charity where the returns are obvious.

The difference between the two most probably will not break the bank for most here. However, over the ownership lifespan of your vehicle - especially if you pile on the miles - the numbers just may be significant. That and the fact that many, like me, dependant on your area of residence, pay $0.50 or more for 89 grade fuel over 87 grade fuel. Yes, it's absurd, but it is what it is.

The numbers [savings] may just suprise you.

I now exclusively use Shell or Exxon 87 grade fuel.
__________________
Truck was sold today [5/19]. I got an offer I couldn't turn down. I had no more need for a pickup so I cut it loose. About to purchase a '14 Jeep SRT8 this week.

Grub out!
Reply With Quote
  #5  
Old 03-24-2013, 01:24 PM
S.C. Express S.C. Express is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jul 2012
Location: North Augusta S.C.
Age: 39
Posts: 1,017
Gender: Male
Vehicle: 2012 Ram Express
Trim Level: Express
Color: Silver
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:63
S.C. Express will become famous soon enough
Default

^^ Same results as Grubby.. 87,89,91,93 no ethanol...without a tuner the truck runs the same. I would go as far as saying that the ECM can't or won't pull enough timing to take advantage of the 93 no ethanol. It seemed to run slightly worse, nothing terrible but I def. saw no improvement. Cool dry days do more for my truck than fuel does. Tuners change this and I will find out sometime soon.
__________________
Jones MaxFlow 18" muffler swap, Green Performance drop in air filter..
Reply With Quote
  #6  
Old 03-24-2013, 02:10 PM
HOTRODHARLEY's Avatar
HOTRODHARLEY HOTRODHARLEY is offline
Dodge Ram Forum Senior Member!
 
Join Date: Feb 2013
Location: EDMONTON, AB CANADA
Age: 32
Posts: 228
Gender: Male
Vehicle: 2013 Ram factory order
Trim Level: ST
Color: BLACK
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 2
Rep:256
HOTRODHARLEY is a jewel in the roughHOTRODHARLEY is a jewel in the roughHOTRODHARLEY is a jewel in the rough
Default

It's not really about noticing some huge difference. It's more about peace of mind and personal preference. It's kind of like taking Vitamins... A person takes them with good intentions but who really knows if they do anything...

I personally notice a 2mpg difference on average...
__________________
Belltech 3"/5" Lowering kit. Belltech Rear Swaybar, Flowmaster Y Pipe, Custom 4" Single Exhaust w/ 4" Race Magnaflow, 22" SRT10 Wheels, Moroso Catch Can, Undercover SE Tonneau Cover, Weathertech Techliner Bedliner, Diablosport Trinity w/ Hemifever Tune
Reply With Quote
  #7  
Old 03-24-2013, 10:17 PM
RepentaRAM777 RepentaRAM777 is offline
Dodge Ram Forum Junior Member
 
Join Date: Jun 2012
Location: Cochrane, Alberta
Age: 21
Posts: 32
Gender: Male
Vehicle: 2004 Dodge Ram 1500
Trim Level: SLT
Color: Silver
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
Rep Power: 0
Rep:10
RepentaRAM777 is on a distinguished road
Default

So far i'm seeing the use of either fuel grade is simply personal choice, in which case. I think I'll stick to 87 for now until i get a real job and can afford the extra fuel upgrades and possible mods to go along with it. Really appreciated the replies!
Reply With Quote
  #8  
Old 03-24-2013, 10:18 PM
RepentaRAM777 RepentaRAM777 is offline
Dodge Ram Forum Junior Member
 
Join Date: Jun 2012
Location: Cochrane, Alberta
Age: 21
Posts: 32
Gender: Male
Vehicle: 2004 Dodge Ram 1500
Trim Level: SLT
Color: Silver
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
Rep Power: 0
Rep:10
RepentaRAM777 is on a distinguished road
Default

Quote:
Originally Posted by S.C. Express View Post
^^ Same results as Grubby.. 87,89,91,93 no ethanol...without a tuner the truck runs the same. I would go as far as saying that the ECM can't or won't pull enough timing to take advantage of the 93 no ethanol. It seemed to run slightly worse, nothing terrible but I def. saw no improvement. Cool dry days do more for my truck than fuel does. Tuners change this and I will find out sometime soon.
Keep us posted on what tuner you're getting and how the fuel mileages goes, this might save me (and others) a lot of time looking for decent tuners.
Reply With Quote
  #9  
Old 03-25-2013, 03:48 PM
Samcro's Avatar
Samcro Samcro is offline
Dodge Ram Forum Newcomer
 
Join Date: Mar 2013
Location: FL
Posts: 15
Gender: Male
Vehicle: 2012 Dodge Ram 1500
Trim Level: Express
Color: Silver
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:10
Samcro is on a distinguished road
Default

Quote:
Originally Posted by HOTRODHARLEY View Post
It's not really about noticing some huge difference. It's more about peace of mind and personal preference. It's kind of like taking Vitamins... A person takes them with good intentions but who really knows if they do anything...

I personally notice a 2mpg difference on average...
Totally agree. Only difference I've noticed it's a small improvement in gas mileage.
Reply With Quote
  #10  
Old 03-28-2013, 01:30 PM
CoachRyan's Avatar
CoachRyan CoachRyan is offline
Dodge Ram Forum Junior Member
 
Join Date: Mar 2012
Location: Buford, Ga
Posts: 47
Gender: Male
Vehicle: 2012 Dodge Ram
Color: Black
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:10
CoachRyan is on a distinguished road
Default

I run 93 but that is because I run the Diablo 93 Octane Tune. Gas mileage is a little bit better whenever I decide to keep my foot out of my gas tank but for me my daily commute is miniscule so it's hard to judge sometimes. I fill up once every 3 weeks.
Reply With Quote
Reply

Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


Advertisement






All times are GMT -4. The time now is 06:40 AM.


= Copyright RamForumZ.com a Gigathreads.com Network Site =Ad Management by RedTyger
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
vB.Sponsors


=Gigathreads Network=
CLUBS MOPAR NATION DSM GPMM MAMM JAM
DIESEL Diesel Forum      
CHEVY Chevy Camaro Forum Chevy Volt Forum    
CHRYSLER Chrysler 300C Forum      
DODGE Dodge Avenger Forum Dodge Caliber Forum Dodge Challenger Forum Dodge Charger Forum
  Dodge Circuit Forum Dodge Hornet Forum Dodge Magnum Forum Dodge Nitro Forum
  Dodge Ram Forum Dodge Dakota Forum Dodge Durango Forum Dodge Dart Forum
FORD Ford Raptor Forum Ford F150 Forum Ford F100 Forum  
JEEP Jeep Forum      
PONTIAC Pontiac G8 Forum      
SRT SRT Viper Forum SRT Cuda Forum