Thread: Socata 235E with O-540 b4b5 problem
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Old September 20th 14, 07:31 AM posted to rec.aviation.soaring
Alexey Sharadkin
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Default Socata 235E with O-540 b4b5 problem
http://www.helium-group.com/wp-conte...POH-Tables.pdf says minimum fuel grade is 100/130. Discussion at http://www.pprune.org/private-flying...540-mogas.html suggests detonation and per-ignition problems with 92. Have you tried it with 100LL and compared how it runs?

For O540 B4B5 minimum fuel grade 80\87.