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Old 05-05-2011, 08:31 AM
olebrooklawn olebrooklawn is offline
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new to me stihl Fs 90 R. Gas/oil ratio to use?

thanks sam
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Old 05-05-2011, 08:42 AM
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Just go get some Opti-2, or Amsoil 2 cycle mix and take the guess work out of it.

Either of those two brands will allow you to mix at their recommended rate for all equipment, thus no separate cans for different machines.
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Old 05-05-2011, 08:45 AM
FLAhaulboy FLAhaulboy is offline
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50 to 1 ratio using 93 octane gas.
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Old 05-05-2011, 11:58 PM
gebby gebby is offline
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Use stihl oil. Buy them by the size the store has. The very small one will do 1 gal and the next size up will make 2 gals. Your dealer will appreciate and he can't say the problem is the wrong oil or mix if there is a problem. No guessing. As suggested alway's use high test gas.
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Old 05-06-2011, 12:05 AM
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Quote:
Originally Posted by FLAhaulboy View Post
50 to 1 ratio using 93 octane gas.
That's what I use with Stihl oil.
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Old 05-06-2011, 02:42 AM
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Richard Martin Richard Martin is offline
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You're going to get a lot of opinions on this and here's mine. I've been using Amsoil mixed at 80:1 with name brand mid grade gas for a decade now. I've had ZERO oil related problems with any of my 2 stroke or 4 Mix tools. I have a bunch of them too with the huge majority being Stihl.
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Old 05-06-2011, 06:25 AM
LaLawnGuy LaLawnGuy is offline
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i use the stihl HP Ultra and love it, buy it by the case from the dealer and the cost goes waaaay doen, or did for me. Btw, do you know Tim or Adam Gordon there in B'haven?
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Old 05-06-2011, 01:22 PM
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GMLC GMLC is offline
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Stihl HP Ultra oil at 50:1 with 93 octane. The Stihl HP Ultra oil already has fuel stabilizer in it!!
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Old 05-06-2011, 01:47 PM
BestImpressions99 BestImpressions99 is offline
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Agree that using the Amisol or the Opti-2 is the best idea. Costs $70 for a gallon, but you don't have 3 different cans to worry about.
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Old 05-06-2011, 10:40 PM
olebrooklawn olebrooklawn is offline
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Originally Posted by BestImpressions99 View Post
Agree that using the Amisol or the Opti-2 is the best idea. Costs $70 for a gallon, but you don't have 3 different cans to worry about.
No I don't know them. I got a dumb question? Do I need to use 4 stroke oil instead of 2 stroke?
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