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Gas <what octane level?>

Discussion in 'Yamaha AR240, SX240, 242 Limited / S / X/ E-Series' started by match308, Sep 9, 2018.

  1. match308

    match308 Active Member

    Messages:
    16
    Location:
    DFW
    Ratings:
    +9 / 1
    Boat Make:
    Yamaha
    Year:
    2018
    Boat Model:
    Limited S
    Boat Length:
    24
    Is regular gas the best option for the Yamaha? I’ve always been told that Premium was necessary for all boat engines.
     
  2. seadude

    seadude Jet Boat Lover

    Messages:
    137
    Location:
    NJ
    Ratings:
    +75 / 2
    Boat Make:
    Yamaha
    Year:
    2016
    Boat Model:
    242 Limited S E-Series
    Boat Length:
    24
    Pretty sure Yamaha recommends 89 pump octane for the 1.8l engines - that's all I can get a the Jersey shore and they run fine.
     
  3. captras

    captras Jet Boat Addict

    Messages:
    664
    Location:
    Lake Livingston, Texas
    Ratings:
    +647 / 30
    Boat Make:
    Yamaha
    Year:
    2016
    Boat Model:
    242 Limited S E-Series
    Boat Length:
    24
    Manual says minimum Recommended fuel. ..86 Oct. Page 114 2016 242 limited SE. I use 87 with no issues! Premium is a total waste of money! If you don't mind the extra cost you are better to use 87 no ethanol fuel!
     
    • Like Like x 1
    • Agree Agree x 1
  4. haknslash

    haknslash Jetboaters Admiral

    Messages:
    4,270
    Location:
    Alabaster, AL
    Ratings:
    +4,154 / 101
    Boat Make:
    Yamaha
    Year:
    2016
    Boat Model:
    AR192
    Boat Length:
    19
    You run 86 in it. Lowest we have here is 87 and that would be fine too. I run the cheaper regular ethanol at your local gas station but I also use Stabil.

    Here's the AR240 owner's manual...

    image.png
     
    • Agree Agree x 1
  5. match308

    match308 Active Member

    Messages:
    16
    Location:
    DFW
    Ratings:
    +9 / 1
    Boat Make:
    Yamaha
    Year:
    2018
    Boat Model:
    Limited S
    Boat Length:
    24
    Thanks. Great to know
     
  6. scot71

    scot71 Jetboaters Commander

    Messages:
    922
    Location:
    Williamsport, IN
    Ratings:
    +806 / 14
    Boat Make:
    Yamaha
    Year:
    2004
    Boat Model:
    SX
    Boat Length:
    23
  7. swatski

    swatski Jetboaters Fleet Admiral

    Messages:
    7,907
    Location:
    Saint Louis, MO
    Ratings:
    +8,538 / 126
    Boat Make:
    Yamaha
    Year:
    2016
    Boat Model:
    AR
    Boat Length:
    24
    True for the Yamaha JB engines, certainly the N/As that do not even have knock sensors - like in my boat.
    But - if you drive a Toyota, then I don't know about that...
    93 certainly makes a difference. I figured it costs me about two Starbuck drinks - which I don't do anyway, lol - to fill up my truck with 93 vs 87, so I do it all the time!
    https://jetboaters.net/threads/prem...ane-for-your-tow-vehicle-toyota-trucks.19891/

    --
     
  8. Hilario Perez

    Hilario Perez Active Member

    Messages:
    201
    Location:
    Kissimmee FL.
    Ratings:
    +83 / 1
    Boat Make:
    Yamaha
    Year:
    2011
    Boat Model:
    SX
    Boat Length:
    24
    I use 87 and at least 2 times in the season here in Florida I put in seafoam and the boat run awesome. Two weeks ago me and 3 other buddy's of mine ran from Malabar to Fort Pierce and I had 4 adults
    And my SX 240 was running 51 to 52 mph.
     
    • Agree Agree x 1
  9. swatski

    swatski Jetboaters Fleet Admiral

    Messages:
    7,907
    Location:
    Saint Louis, MO
    Ratings:
    +8,538 / 126
    Boat Make:
    Yamaha
    Year:
    2016
    Boat Model:
    AR
    Boat Length:
    24
    If anything, Yamaha 1.8 N/As run a tad faster on 87. That’s been my experience and others.

    That said, if given a choice I would always buy non-ethanol for a boat. We don’t have that choice though around here.

     
  10. iamcalled

    iamcalled Member

    Messages:
    20
    Location:
    Carrollton Texas
    Ratings:
    +3 / 2
    Boat Make:
    Yamaha
    Year:
    2018
    Boat Model:
    AR
    Boat Length:
    24
    Along this line what do y’all do to store your boats for winter as far as fuel left in the tank. Was going to use stabil which says to fill tank to 95% full then add 1oz for every 2.5 gallons but i figure these tanks are aluminum or poly and won’t condensate. Thoughts?
     
  11. swatski

    swatski Jetboaters Fleet Admiral

    Messages:
    7,907
    Location:
    Saint Louis, MO
    Ratings:
    +8,538 / 126
    Boat Make:
    Yamaha
    Year:
    2016
    Boat Model:
    AR
    Boat Length:
    24
    Absolutely, positively, use Stabil for long term storage with any E10!

    --
     
  12. 2kwik4u

    2kwik4u Jet Boat Junkie

    Messages:
    1,083
    Location:
    Georgetown, IN
    Ratings:
    +803 / 14
    Boat Make:
    Yamaha
    Year:
    2017
    Boat Model:
    AR
    Boat Length:
    19
    I'm over cautious. I fill with E-0 "rec fuel" from the rural station, then add Stabil on top of that for storage.
     
  13. captras

    captras Jet Boat Addict

    Messages:
    664
    Location:
    Lake Livingston, Texas
    Ratings:
    +647 / 30
    Boat Make:
    Yamaha
    Year:
    2016
    Boat Model:
    242 Limited S E-Series
    Boat Length:
    24
    Use Stabil 360 rather than regular stabil. It is a little more expensive, but designed for marine purposes. Plus it is 1oz per 10 gallons.
     
    • Like Like x 1
  14. merlinjet

    merlinjet Well-Known Member

    Messages:
    159
    Location:
    Laughlin, NV
    Ratings:
    +81 / 0
    Boat Make:
    Yamaha
    Year:
    2014
    Boat Model:
    SX
    Boat Length:
    19
    x2 on the Stabil 360!
     
    • Agree Agree x 1
  15. Papa

    Papa Jet Boat Addict

    Messages:
    150
    Location:
    Lake Sinclair GA
    Ratings:
    +63 / 1
    Boat Make:
    Yamaha
    Year:
    2013
    Boat Model:
    242 Limited S E-Series
    Boat Length:
    24
    X2 on Stabil 360. Keeps my lawn equipment running also.
     

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