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What fuel is recommended for the 912UL Rotax engine

 

  • Re: Fuel question

    by » 3 months ago


    Hi Sheila

    Look in your operators manual, it shows the min value there under operating media.  The type 912 UL is an 80 HP engine with low compression (9 to 1) and can operate on regular fuel.  It may be better to find one grade higher (higher AKI value).  I note you are in Washington State so be aware of seasonal fuels and do not use winter blend fuel in warm weather. Blends change usually September 15th to winter in Washington and back to summer mid May.  

    Cheers

    38043_2_min fuel 912.jpg (You do not have access to download this file.)

  • Re: Fuel question

    by » 3 months ago


    Most of the people I know and talk to use 91 oct. auto fuel and yes most use the ethanol fuel. Yes some do use 100LL and of course when you travel most use 100LL. If you do use 100LL use Decalin to help reduce the leading from the 100LL. Ethanol fuels like 10% - 15% are used by many, BUT make sure your tank is okay with that. Metal tanks are usually fine and fiberglass or composite COATED tanks. Some types of fiberglass tanks don't do well with an ethanol blend.

    You can check with your aircraft MFG.

    For instance Flight Design aircraft have a coated composite tank. The factory I believe uses a product called Kream Wisse (couldn't find it on the internet). That coating is impervious to the ethanol blend fuel and most of us in the USA end up using the 91 oct. ethanol blend.

    Here's another one that says it's safe to use with ethanol fuels and works on many different materials.


    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell


  • Re: Fuel question

    by » 3 months ago


    Roger, this may be the tank coating you were looking for: https://www.kreem.com/products.html


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