CMF Senior Member
Join Date: Aug 2017
Location: Cambridge IL - USA
Re: 91 Octane
In my 2019 2.0 Equinox Redline, I use both 91 and 93 octane fuels. The 91 is from a BP, Phillips, or Cenex, and is a no ethanol fuel. The 93 octane is from another local BP station, but this one is E-10, 10% ethanol blend.
In colder weather I tend to prefer the 91 no ethanol; when ambient temps are higher and I am using AC and traveling higher speeds under higher loads, I prefer the 93 octane for maximum performance and engine protection.
In our Malibu 1.5 we use 87 or 89 E-10.
2019 Equinox 2.0 LT Redline- Silver - FWD
2017 Malibu 1.5 LT - Pepperdust - Leather - Convenience
2016 Equinox 3.6 LTZ - AWD
2009 Silverado 5.3 LT 4x4 ext. cab
Last edited by GarBec; 04-14-2019 at 03:02 PM.