Jay Honeck wrote:
87 octane auto gas is perfect for our low compression engines, and
certainly won't hurt them. Using "premium" (or, for that matter, 100
LL) is neither necessary nor recommended.

(Note: SOME mogas STCs do require using a higher octane car gas, but
those are the exception, not the rule.)

Don't forget, MANY planes are not considered low compression, even though
they're not exactly "high performance". For example, all the 160 hp versions
of the O-320 found in many Cherokees, Warriors, C-172s, etc, as well as the
normally aspirated 180 hp O-360 found in Cherokee 180s, REQUIRE higher octane
than 87 octane car gas. I believe, for most of them, they could get by with
less than 100, but would certainly need super unleaded as a minimum.

--- Jay


--

Jay Masino "Home is where the critters are"
http://www.JayMasino.com
http://www.OceanCityAirport.com
http://www.oc-Adolfos.com