1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Premium gas = more power

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Bryan07sport, Aug 13, 2010.

  1. Aug 13, 2010 at 4:45 PM
    #1
    Bryan07sport

    Bryan07sport [OP] Well-Known Member

    Joined:
    Sep 26, 2009
    Member:
    #23363
    Messages:
    360
    Gender:
    Male
    First Name:
    Bryan
    Newark, Delaware
    Vehicle:
    07 TRD Sport Access 6spd
    Hardwire GPS, 110v power outlet in cab, foglights anytime, mudflaps removed, pa-15 ipod interface, rear leaf tsb, URD short shift, integrated third brake/cargo light, ABS disable switch, BHLM, Dynomax super turbo muffler, Nitto Terra Grapplers 265/70/17, Front Bilstein 5100's at 1.75, Weathertech floormats, sockmonkey bedsides, bestop supertop, spidertrax
    Let me start out by saying that I thought the premium gas/ regular debate was a joke. Anyway after reading threads concerning this I decided to run 93 octane for awhile. Thought it felt like it had a little more pep, but was convinced that it was just placebo, not unlike how much faster my truck is after I wash it.:rolleyes: Anyway I tow a boat on a hilly stretch of i95 on a regular basis, always at 70 mph. While running the 93 I always just left it in 5th gear and was able to maintain speed. For the past 6 weeks I had been running 87 octane and when towing the boat at the same speed on the same road, was unable to maintain 70mph in 5th. had to downshift. Switched back to 93 and 70mph in 5th was do-able again. I know this has been a longwinded debate, and I can't say I think it makes much of a difference for everyday driving, but my results have been 100% consistant (15+ roundtrips on both octanes) and definetely support a few extra ponies out of the premium fuel. just a little fyi i thought i'd share.
     
    shitgoose06 likes this.
  2. Aug 13, 2010 at 6:43 PM
    #2
    buddywh1

    buddywh1 Well-Known Member

    Joined:
    Apr 23, 2010
    Member:
    #35825
    Messages:
    1,452
    Gender:
    Male
    Philly PA
    Vehicle:
    07 DC SR5 4x4
    At least try a little to make it unbiased...

    have your SO fill it up, and tell her/him to put either 93 or 87, their choice, but not tell you which.

    Do that the next 4 fill ups, both of you keep a record of it, your impressions of how it drove with each fillup and what you think your driving.

    Then tell us how well it turns out.
     
  3. Aug 13, 2010 at 6:46 PM
    #3
    iSTIZO99

    iSTIZO99 Well-Known Member

    Joined:
    Jun 3, 2010
    Member:
    #38297
    Messages:
    1,785
    Gender:
    Male
    First Name:
    Mike
    Jax, FL
    Vehicle:
    2010 TRD Sport 4x4 DC/SB
  4. Aug 13, 2010 at 6:59 PM
    #4
    1TUFFTRD

    1TUFFTRD WTF

    Joined:
    Feb 4, 2010
    Member:
    #30721
    Messages:
    2,127
    Gender:
    Male
    out and about building powerlines
    Vehicle:
    06 AC with a skewp
    06 With a Skewp.
    i run 91 all the time! (ding...ding...ding...let the hating begain):D
     
  5. Aug 13, 2010 at 7:05 PM
    #5
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,192
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    In the manual, It states Best performance is achieved when useing 91 oct. fuel. Many people have found the same thing, that the higher octain gives better results. Im one of them.
     
  6. Aug 13, 2010 at 7:08 PM
    #6
    numbah57

    numbah57 GIVE THE MALL A BREAK...WHEEL THAT SHIT

    Joined:
    Oct 11, 2009
    Member:
    #24160
    Messages:
    3,460
    Gender:
    Male
    First Name:
    kahai
    Maui, Hawaii
    Vehicle:
    09 tacoma 2.7 Beaten not Babied
    URD ARB G2 PELFREY BAMF LCE AFE

    Even for us 4-bangers??
     
  7. Aug 13, 2010 at 7:09 PM
    #7
    Zombie Runner

    Zombie Runner Are these black helicopters for me?

    Joined:
    Mar 13, 2008
    Member:
    #5246
    Messages:
    15,036
    Gender:
    Male
    First Name:
    Kevin
    Wichita Falls, TX
    Vehicle:
    Tundra, double cab.
    LED interior lights, stubby antenna, Pioneer in dash screen, good driver mod.
    some people dont run higher octane b/c the cost...in reality it only adds about about 5 bucks per tank...if you think it makes it run better then why not, right?!

    Ive ran higher octane before and didnt notice anything so i just use 87...but I also dont tow anything
     
  8. Aug 13, 2010 at 7:11 PM
    #8
    Super Werty

    Super Werty Sleeper 4x4

    Joined:
    Aug 1, 2008
    Member:
    #8278
    Messages:
    578
    Gender:
    Male
    Arizona
    Vehicle:
    07 TRD Tacoma
    air and fuel
  9. Aug 13, 2010 at 7:12 PM
    #9
    Isthatahemi

    Isthatahemi Well-Known Member

    Joined:
    Apr 29, 2009
    Member:
    #16582
    Messages:
    1,156
    Gender:
    Male
    Vehicle:
    TRD OFF ROAD
    BFG AT's, Weathertechs, Hoppy's brake controller.
    93 does make a noticable difference in the ability to hold higher gears, mostly because the extra power is down low.
    I agree with the O.P.
     
  10. Aug 13, 2010 at 7:16 PM
    #10
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,192
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    Yeah...seems the 08 and up manuals dont list it. Maybe there is a change in the programming that doesnt allow the benafit to be seen when useing 91.
     
  11. Aug 13, 2010 at 7:16 PM
    #11
    AriZonaD54

    AriZonaD54 BANNED in 49 states...

    Joined:
    Aug 12, 2009
    Member:
    #21108
    Messages:
    2,490
    Gender:
    Male
    First Name:
    Andrew
    Valley of the Sun
    I dynod this when I first got the truck last August (2009).. I made a run with 87 and 91. It sounded better which I figured might have meant a little more performance. The two torque and HP curves ended up being nearly identical. In fact, there was no HP gain. Torque went up 1 with 91.

    Me... I run 87 in my truck. Never had any issues.
     
  12. Aug 13, 2010 at 7:17 PM
    #12
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,192
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.

    IIRC, Toyota even advertised (or listed in some literature) the higher output running the 91 oct. fuels.
     
  13. Aug 13, 2010 at 7:17 PM
    #13
    Crom

    Crom Outside...

    Joined:
    Jun 22, 2009
    Member:
    #18782
    Messages:
    8,386
    Gender:
    Male
    First Name:
    Nick
    San Diego, CA
    Vehicle:
    2009 4x4 DCSB Overland Build
    Millions
    Chris made me look in the manual. Here is what mine said:

    My 2009 my manual states:
    page 479 (Specifications - Fuel Information)
     
  14. Aug 13, 2010 at 7:20 PM
    #14
    Razorecko

    Razorecko Well-Known Member

    Joined:
    Jun 7, 2009
    Member:
    #18125
    Messages:
    1,447
    Gender:
    Male
    Vehicle:
    '09 Pyrite DCLB TRD Supercharged
    Shell's 93 is the best stuff. The difference between their 93 and lets say mobile's 93 is like the difference between 89 and 93.
     
  15. Aug 13, 2010 at 7:20 PM
    #15
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,192
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    Welp...After the testing I did, I run 91 all the time, and the truck seems happy. $0.20 more per gallon, and better mpg (a wash given the huge price increase), I'll keep running the 91.
     
  16. Aug 13, 2010 at 7:24 PM
    #16
    Crom

    Crom Outside...

    Joined:
    Jun 22, 2009
    Member:
    #18782
    Messages:
    8,386
    Gender:
    Male
    First Name:
    Nick
    San Diego, CA
    Vehicle:
    2009 4x4 DCSB Overland Build
    Millions
    Hasn't it been established that the higher Octane fuel has more or longer hydrocarbon molecules which burn slower and therefore provide more power? So in theory, a gas-tank with a higher octane rating fuel would last longer than the lower octane fuel...

    Without doing any reading on the subject that's how I understand it.
     
  17. Aug 13, 2010 at 7:25 PM
    #17
    iSTIZO99

    iSTIZO99 Well-Known Member

    Joined:
    Jun 3, 2010
    Member:
    #38297
    Messages:
    1,785
    Gender:
    Male
    First Name:
    Mike
    Jax, FL
    Vehicle:
    2010 TRD Sport 4x4 DC/SB
    Yeaa who needs a stinkin supercharger! :)
     
  18. Aug 13, 2010 at 7:26 PM
    #18
    Fore

    Fore Well-Known Member

    Joined:
    Jun 11, 2009
    Member:
    #18305
    Messages:
    79
    Gender:
    Male
    Vehicle:
    07 PreRunner
    So, I guess it's time for me to chime in; I don't do this very often so here it goes. I have a 2007 Tacoma Prerunner with theTRD package. I changed my air filter to AFE Pro Dry S I believe it's called and the muffler to a 14" straight flow similar to the Wicked Flow just didn't cost as much. Anways lately I have been using 91 octane or better and I have consistently got on average 22 mpg or better. Just my two cents.
     
    shitgoose06 likes this.
  19. Aug 13, 2010 at 7:59 PM
    #19
    joes06tacoma

    joes06tacoma Well-Known Member

    Joined:
    Jan 1, 2010
    Member:
    #28588
    Messages:
    3,056
    Gender:
    Male
    First Name:
    Joe
    Central Coast, CA
    Vehicle:
    06 4x4 Off Road Access Cab v6 6spd
    LEER Shell with dome lights operated with 3 way switches, aux backup lights with relay and 3 position switch, modified wiring to compass/temp display and clock to include switch that disables dimming function (poor man's DRL solution), Scan Gauge 2
    I use 91 in mine. No dyno results to post, but definitely feels stronger. 87 causes pinging under hard acceleration. I also see almost 2MPG increase in around town driving (kinda have a lead foot). The increase in MPG pays for the cost of the high octane in my case.
     
  20. Aug 13, 2010 at 8:07 PM
    #20
    Yoytoda

    Yoytoda The Little Truck That Could

    Joined:
    Oct 2, 2009
    Member:
    #23690
    Messages:
    4,949
    Gender:
    Male
    First Name:
    Roland
    Big Bear,CA / Upstate NY(Saratoga)
    Vehicle:
    2010 Tacoma Regular Cab 4x4
    completely stock
    also, like it has been said before, on 87 the timing is retarded a bit to prevent knocking. on 91 or higher the knock sensors do not sense the knocking because the fuel has better anti knock value. this makes the computer advance the timing. a further advanced timing makes for more power. So even if it has nothing to do with how the fuel burns, advanced timing will add power
     
    TRDSmacker likes this.
To Top