How to tell when fuel is bad?

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evildomain

evildomain

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Ok, I've been meaning to ask you guys how can I tell when my fuel has gone


bad or I have a bad batch? I've read some posts where someone doesn't drive


their truck a little while and then all of sudden the fuel is no good. Is it color or smell?
 
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Evildomain said:
Ok, I've been meaning to ask you guys how can I tell when my fuel has gone bad or I have a bad batch?
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If you drop a lit match in it and it doesn't explode, it's no good... :p
 
Good idea. I'm going to try that right now.


Lighting the match, getting it near the open gas can, nothing seems to be happe......................
 
Another good reason why I run AVGAS 100LL . I have never had a issue with the fuel and I go for months between running at times. I do more fabbing and building for my ( and you all ) R/C's than I do running.
 
RampageHopUps said:
If ti doesn't kill your neighbors grass, it was bad. I don't take a chance, I just dump it in the golf cart.
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Nice.. I'll check that out...


While we're on the subject.. If bad gas were used, can it cause any damage? Is there any concern other than a lack of performance?
 
Like other said, very old gas have a caracteristic smell.


Usually less than 3 month your oil mixed fuel are still ok, I even don't worry myself to use 5 - 6 month old not mixed gas, if I have a doubt, I put some octane booster in it.


Old gas can cause the engine to ping (detonation) = too much heat = can cause bad performance, or engine damage...........


At the end, for that smaller quantity of fuel you use in your RC, if you have a doubt about your fuel, put it in your lawn mower, snowblower, golf cart, etc...... and go to buy another 4$ of fresh fuel for your delicate RC engine, I don't think it will harm the budgit a lot..........
 
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