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 - Help Zone - Dodge Ram Problems, Complaints, & Solutions - Maintenance & Re > Dodge Ram MPG Zone


Notices

Dodge Ram MPG Zone Discuss your MPG woes and helpful hints here!


Latest Vendor News
AutoAnything
Addictive Desert Designs!
Bayou Goat Mounts

Reply
 
Thread Tools
  #1  
Old 04-12-2010, 03:29 PM
Indeepcamo's Avatar
Indeepcamo Indeepcamo is offline
Dodge Ram Forum Senior Member!
 
Join Date: Dec 2009
Location: Portland, OR
Posts: 132
Gender: Male
Vehicle: 2010 2500 Mega Cab
Trim Level: Laramie
Color: Deep Water Blue
Engine: 2009-2010 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:30
Indeepcamo is on a distinguished road
Default Fuel Question

No doubt this has been discussed before but just curious as to type of gas folks are putting in the 5.7L. The owners manual says 87 is okay but 89 is recommended. I went with the 89 as it is second tank of gas and figured why not. But if most are running 87 and not having issues than maybe I should save the money per gallon and spend it on Mods!!!
Reply With Quote
Sponsored links
  #2  
Old 04-12-2010, 03:39 PM
CanadianInfernoRed's Avatar
CanadianInfernoRed CanadianInfernoRed is offline
Dodge Ram Forum Senior Member!
 
Join Date: Mar 2010
Location: Alberta, Canada
Posts: 111
Gender: Male
Vehicle: 2010 Ram 1500 Crew Cab 4x4
Trim Level: SLT
Color: Inferno Red
Engine: 2009-2010 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:22
CanadianInfernoRed is on a distinguished road
Default

I run 87 and I on my last road trip I got 23 mpg ... granted I was doing 55 mph but still 23 mpg is pretty good and the truck is so comfortable that I did not mind going that slow.
__________________
2010 Dodge Ram 1500 SLT Crew Cab 4x4, 5.7L Hemi 390 hp 407 lb/ft
Reply With Quote
  #3  
Old 04-12-2010, 03:39 PM
GTyankee's Avatar
GTyankee GTyankee is offline
Dodge Ram Forum Member

 
Join Date: Dec 2009
Location: San Diego East County, Ca
Posts: 17,965
Gender: Male
Vehicle: 2009 Dodge Ram 1500 2X4
Trim Level: quad cab SLT
Color: sunburst orange pearl
Rep Power: 18
Rep:2589
GTyankee has a reputation beyond reputeGTyankee has a reputation beyond reputeGTyankee has a reputation beyond reputeGTyankee has a reputation beyond reputeGTyankee has a reputation beyond reputeGTyankee has a reputation beyond reputeGTyankee has a reputation beyond reputeGTyankee has a reputation beyond reputeGTyankee has a reputation beyond reputeGTyankee has a reputation beyond reputeGTyankee has a reputation beyond repute
Default

I use mid grade myself, but, my Harley drinks supreme
__________________
Ram 1500 SLT Quad cab, 5.7 HEMI(R) MDS VCT, 5 speed auto 545RFE, 3.55 differential gears, 18" Magnaflow muffler, EGR bug deflector, Bushwacker fender flares, customized Nfab nerf bars, CB radio, Autonet wi-fi router, custom soft tonneau cover, Line_X bedliner, DEBO Step, build date 10/15/08 a Wednesday built vehicle
Reply With Quote
  #4  
Old 04-12-2010, 03:39 PM
hemiv8dodgeram1500's Avatar
hemiv8dodgeram1500 hemiv8dodgeram1500 is offline
Dodge Ram Forum Senior Member!
 
Join Date: Nov 2009
Age: 22
Posts: 8,602
Gender: Male
Vehicle: Jeep GC WK
Rep Power: 10
Rep:964
hemiv8dodgeram1500 is a splendid one to beholdhemiv8dodgeram1500 is a splendid one to beholdhemiv8dodgeram1500 is a splendid one to beholdhemiv8dodgeram1500 is a splendid one to beholdhemiv8dodgeram1500 is a splendid one to beholdhemiv8dodgeram1500 is a splendid one to beholdhemiv8dodgeram1500 is a splendid one to beholdhemiv8dodgeram1500 is a splendid one to behold
Default

i only use 89 when i tryed 87 my truck felt and ran very sluggish
__________________
"Yup...Speed Kills.....mileage that is. "--brad12kx
"lol.... yeah, thats the answer! Just get under the dash and cut some wires! Im sure it will be fine!" --gregster
I dont always drink and drive, but when I do, I prefer Dos Equis. stay thirsty my friends
Reply With Quote
  #5  
Old 04-12-2010, 04:09 PM
glamontagne's Avatar
glamontagne glamontagne is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jun 2009
Location: New Hampshire
Age: 37
Posts: 413
Gender: Male
Vehicle: 2009 Dodge Ram Crew
Trim Level: SLT
Color: Brilliant Black Crystal Pearl
Engine: 2009-2010 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:55
glamontagne will become famous soon enough
Default

I use 87 and I notice no difference from the higher octanes.
__________________
Gary--2009 Black Ram Crew 5.7 Truck Champ Stainless tube steps,Tekstyle Tonneau Cover, LED Interior, LED License Plate Lights, LED Reverse Lights, LED Cargos, 5900k Headlights and Fogs.
Reply With Quote
  #6  
Old 04-12-2010, 06:03 PM
Luke's Avatar
Luke Luke is offline
Dodge Ram Forum Junior Member
 
Join Date: Feb 2010
Location: New Brunswick, Canada
Posts: 46
Gender: Male
Vehicle: 2010 Dodge Ram 1500
Trim Level: SLT plus
Color: Black
Engine: 2009-2010 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 0
Rep:20
Luke is on a distinguished road
Default

I use 89 cause I'd rather not risk spark knocks, I like my truck way to much, I don't cheap out on my beer and rum and that just goes to say I won't on my fuel either, I intend on keeping it for a while. I don't drive my truck hard enough to notice a difference in performance, but in my humble opinion why spend that much on something that nice and leave to chance any ill effect the lesser fuel may have.
Reply With Quote
  #7  
Old 04-12-2010, 06:19 PM
Cormacs's Avatar
Cormacs Cormacs is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jan 2010
Location: Ottawa, Ontario
Age: 27
Posts: 266
Gender: Male
Vehicle: 2010 Dodge Ram 1500
Trim Level: Crew Sport
Color: Black
Rep Power: 0
Rep:14
Cormacs is on a distinguished road
Default

87 will have absolutely no ill affect on the truck. Spark knock is a thing of the past with the new electronic ignition and timing. 89 will actually cause more carbon build up then 87 and will increase service interval on spark plugs and fuel injector cleanings. I use 87 and it runs perfect. I would never put a higher grade in unless it called for it. The owners manual says 87 so I use 87.
Reply With Quote
  #8  
Old 04-12-2010, 06:47 PM
topgun's Avatar
topgun topgun is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jun 2009
Location: W PA
Posts: 596
Gender: Male
Vehicle: 2012 Ram 2500 CC 4X4
Trim Level: Outdoorsman
Color: Black
Rep Power: 0
Rep:71
topgun will become famous soon enough
Default

The manual actually says that 87 is ok but 89 is what is recommended for best performance.

Direct from the Owners Manual:

Quote:
The 5.7L engine is designed to meet all emissions regulations and provide satisfactory fuel economy and performance when using high quality unleaded gasoline having an octane range of 87 to 89. The manufacturer recommends the use of 89 octane for optimum performance. The use of premium gasoline is not recommended, as it will not provide any benefit over regular gasoline in these engines.
When towing, I notice a difference when using 89 over the 87 in performance and MPGs.
__________________
Undercover SE, Corsa Cat Back, Amp Powersteps, Amp Bedstep, Bedrug, Mopar Tailgate Lock, Mopar Fold Flat Floor, Mopar Flat Rubber Splash Guards, Cooper AT3 285/70/R17's, S&B Intake, Moroso Catch Can
Reply With Quote
  #9  
Old 04-12-2010, 07:05 PM
Cormacs's Avatar
Cormacs Cormacs is offline
Dodge Ram Forum Senior Member!
 
Join Date: Jan 2010
Location: Ottawa, Ontario
Age: 27
Posts: 266
Gender: Male
Vehicle: 2010 Dodge Ram 1500
Trim Level: Crew Sport
Color: Black
Rep Power: 0
Rep:14
Cormacs is on a distinguished road
Default

89 will burn slower. We have seen issues with people running higher octane gas unneccisarrily and needing maintenance at smaller intervals. If the manufacturer says either is ok I would run the lowest ocatane and not just for the price difference. I don't tow a lot with my truck and I don't race it. The slower the fuel burns ( higher ocatane ) the more carbon produced and therefor more carbon build up. We have always seen vehicles that run high octane fuels such as R/T vehicles will aquire more carbon and require injector services and spark plugs at smaller intervals. The higher octane will only help you under high compression situations such as heavy towing and full throttle where you are useing the engine to it's full protential. Otherwise you are just burning money.

Last edited by Cormacs; 04-12-2010 at 07:16 PM.
Reply With Quote
  #10  
Old 04-12-2010, 08:34 PM
ScatPak07's Avatar
ScatPak07 ScatPak07 is offline
Dodge Ram Forum Senior Member!
 
Join Date: Oct 2009
Location: Oakville, Ontario
Age: 26
Posts: 6,008
Gender: Male
Vehicle: 2007 & 2012 Dodge Rams
Trim Level: Sport & Power Wagon
Color: '07 - Brilliant Black, '12- Grey and Black Lower
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
Rep Power: 9
Rep:970
ScatPak07 is a splendid one to beholdScatPak07 is a splendid one to beholdScatPak07 is a splendid one to beholdScatPak07 is a splendid one to beholdScatPak07 is a splendid one to beholdScatPak07 is a splendid one to beholdScatPak07 is a splendid one to beholdScatPak07 is a splendid one to behold
Default

I would put 91 or 93 in your tank! That will help maintain your new truck and keep the motor clean and the fuel burning better! I have never put anything less than 91 octane in my truck since I got it.

You will be putting $10 more in the tank and it will keep the truck running better and also give you some more pep! I do not know why anyone would not, but that is just me!

Just trying to talk some sense into everyone haha

If you get a programmer it makes a big difference what fuel you put into the truck
__________________
Scat Pak SS/T Edition 2007 Ram 5.7L HEMI A.K.A BLACK HORNET
Performance- DS Predator w/91oct Tune, Gibson CB, BFI CAI, E-Cutout, Jet Stream Scoop, 180 Tstat, Optima Yellow Top.
Suspension-12"Lift, 6" Fabtech Lift w/ Steering Stabilizers & Dirt Logic Shocks, Bilstein 5100s, Oasis Ram Head Diff Cover, 3" PA Body Lift, SSBC Big Brake Kit
Interior- Custom Gauge Face, 3 Auto Meter Gauge A-Pillar, 2 Tone Seats, 12" Kicker L7, Focal K2 Components, Dodge Door Sills, Recon LED Map & Dome lights
Exterior- 20" Moto Metal 951, 40" BFG KM2s, N-Fab W2W Black Side Steps, Recon Black Headlights & Tails+3rd Brake Light & Light Bar, Hella 500s, T-Rex X-Metal Black 1pc Grille, Tints All Around, Painted Bushwacker Pocket Flares & Door Handles & Mirrors, LoRider Tonneau Cover, Hornblasters Train Horns, Iron Bull Bumper w/PIAA Fog & Driving Lights
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 11:10 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