What fuel for 4 stroke???
08-01-2003, 06:42 PM
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What fuel for 4 stroke???
I've been flying 2 stroke glow engines for 10 years, and just bought my first 4 stroke. A Thunder Tiger F-91S. My local hooy store sold me a jug of 15% 4 cyc.syn (100% synthetic. 0 castor, and oil content of 18%) This engine runs rough, idles poor, and deadstick all the time. Someone suggested using just regular 15% glow fuel.So I tried it, Wow, what a difference. It runs like it is supposed to. Is this O.K to use?
