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Gas/fuel requirments

Old 11-09-2016, 10:24 AM
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Gizmo-RCU
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Thumbs up Gas/fuel requirments

Often the question of what fuel to use in gas engines comes up here. I found Husqvarna.com/ ethanol free fuels requirement @ 89 octane or higher. That says a lot for most Gas RC engine applications. If recommended for hard working commercial grade power equipment than it should work well for our engines.
I use Stihl or Husqvarna Syn.oil at recommended mixes........everyone seems to have their own ideas there. Personally I use 90/91 octane which is available here.....
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Old 11-11-2016, 05:40 AM
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STUKA BARRY
 
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I use 93 octane on all my gas engines whether its RC, chainsaw, weed eater, 2stroke generator etc. I just picked up a 3W-210 twin twin spark for my scratch built 1/2 scale Fokker DR1 and the owners manual specifically states 91 or higher octane. I know my G-62's, GT-80's, and Fox 4.2's never fail me with 93, been running this octane since 1985.
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Old 11-11-2016, 08:56 AM
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91 is the best I can do here but the engines like it.
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Old 11-11-2016, 10:47 AM
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Why not just use what the engine manufacturer recommends. They know best since they designed the engine. DA recommends 91/93 octane from a brand name gas station.
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Old 11-11-2016, 03:51 PM
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About what I posted? Husky is one of the leaders and thought folks might find value in me posting this info. as it often comes up.
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Old 11-16-2016, 11:15 PM
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Fuel octane is related to compression ratio. The higher the compression ratio the higher the octane. If the fuel is E10 or not is a different issue but I prefer Non-E and we have 92 octane here which is designed to be used on 10:1 compression ratio engines.
Then the oil ratio is the next issue...
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Old 11-17-2016, 02:00 PM
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Never tried 93 Octane....
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