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Can 15% Heli Niro fuel be used for Y.S. .91 enngine instead of 20/20

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Can 15% Heli Niro fuel be used for Y.S. .91 enngine instead of 20/20

Old 06-15-2014, 02:02 PM
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Default Can 15% Heli Niro fuel be used for Y.S. .91 enngine instead of 20/20

I have been using the 15% Power master Heli fuel on the Y.S. .110 FZ and the .91FZ. I do add 3 oz of Caster /Synthetic oil to the Gallon to raise the oil level from 18% to 20%. Is there any drawback to doing this. I do save $10 a gallon. The engines run great.
Old 06-17-2014, 04:01 AM
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None at all. I used 15% Omega in mine for years with no extra oil added.
Old 06-20-2014, 05:42 PM
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I've been running Sig 10% nitro 2C fuel in my YS53. So far no issue except twice it got a squeaking sound. Almost like it is wheezing????? First thought was a loose motor mount and it was loose. Second time no clue. Upon restart it sounded fine. I don't think it's fuel related.

i run 2C fuel in all my 4C engines. The extra oil is a benefit IMO. I may give up a tad bit of power but I'll suck it up and live with it LOL.

Ken
Old 06-20-2014, 06:49 PM
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The die hard YS guys will say using any fuel with castor in it as blasphemy. It wrecks the engines they've said. I've always thought it was BS, these posts about using SIG or Omega proves its BS. IF I didn't mix my own fuel I'd use SIG Champion in everything.
Old 06-20-2014, 10:51 PM
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They also say that that after run oil is bad but my 110FZ has stayed like new for 10 years and I cote the valves, cylinder and put some in the carb after every flying session. The other guys that don't use any after run oil have valve lifters seize up on them when storing the engines for a spell. Also there cylinders get gummed up.

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