Thread: stihl fs 90r
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Old 04-13-2013, 06:31 PM
Ridin' Green Ridin' Green is offline
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All the major brands specifically recommend using a minimum of 89 or higher octane in their equipment these days.

This is lifted right from the manual for the Stihl BR600M-

"Use mid-grade unleaded gasoline with a minimum octane rating of 89 (R+M2) and no more than 10 percent alcohol content.

Fuel with a lower octane rating may increase engine operating temperatures. This in turn, increases the risk of piston seizure and damage to the engine."

Last edited by Ridin' Green; 04-13-2013 at 06:40 PM.
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