can we burn 94ul in a 10360 & a 10540 eng
hi henry does any body know
3 Replies
Ronald Levy
1021 Posts
Thanks to Daddis for updating to the latest version of SI1070.
There are a number of Lycoming engine models that can safely use 94UL, as well as other unleaded and leaded fuels. Lycoming Service Instruction 1070AB, updated earlier this year and linked below, lays out the details. As indicated in the document, read all of the requirements as simply adding the fuel is probably not an approved procedure by itself. There may be airframe approvals needed, as well as the Lycoming oil additive, or equivalent.
https://www.lycoming.com/sites/default/files/SI1070AB Specified Fuels.pdf
Ronald Levy
1021 Posts
Some can, some can't.  It depends upon the specific model.  See Lycoming SI 1070V for details.