HP 21 fuel?

HP engines (Hirtenberger, AG Austria) tech support. Owned by RJL Industries since 1990

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HP 21 fuel?

Postby BillS » Sat Jan 29, 2005 6:43 pm

I recently acquired a VT 21-Austrian-and have read the info on recommended fuels-adding castor. I'm wondering if there are any modern fuels that meet the requirements, 'out of the bottle', to use with this engine?
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Postby MECOA » Sun Jan 30, 2005 11:23 am

Just read the lable. So if it's not on the lable, don't buy it.
You need at least 20% oil.... but most fuel mfg's keep it a big secret as to the oil content. Don't ask me why. Oil is just as important as nitro. You may be able to call the fuel mfg and get the info. The best way is to add some castor.
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