crtmmac

My Feedback: (12)

Hi. I just took a flight using 25% glow fuel that was purchased in 1993. The seal was unbroken and the engine (O.S. 70 FL) seemed to run fine. Is there any harm/risk in using such old fuel? Thanks for your feedback

wjvail

My Feedback: (3)

Nope.... No problem at all. If it's been sealed and runs fine, it's OK to use.

Bill

crtmmac

My Feedback: (12)

Thanks. Do you think the it will stilll contain 25% Nitro or will that diminish over time?

cheers

wjvail

My Feedback: (3)

Most modern sport aircraft engines aren't designed to run on 25% nitro so even if it did loose some, it wouldn't hurt. All of that is academic. Model fuel will absorb water if not sealed tightly and damage the fuel... but since your fuel has been tightly capped and runs fine, you can rule that out.

Bill

crtmmac

My Feedback: (12)

Thanks again.

cheers

Sport_Pilot

If the seal was broken it would likely contain a higher percentage of nitro not less. Methanol evaporates a lot faster than nitro. If the can was full then it should have the same percentage. My experiance with cracked jugs is that it doesn't pick up moisture, but that the oil percentage is much higher.

crtmmac

My Feedback: (12)

Thanks.

I have about 4 or 5 gallons of this. So at $25 per gal I'm really happy if it works. Which it appears to do.

Thanks for your feedback

jeffie8696

I had a gallon of fuel that sat after being opened but tightly recapped for about 10 years with no problem at all.

crtmmac

My Feedback: (12)

Good to know. Thanks, much

/colin