K2e2vin
Senior Member
only if your vehicle is Flex Fuel or equipped with a Flex-Fuel compatible ECU+sensor(Megasquirt supports this, and I believe Solaris is getting this feature).
If your car is "hard-tuned"(specifically tuned for E85) then putting in regular unleaded will most likely cause severe rich-mixture issues and may also lead to detonation due to the timing advanced for higher octane.
If your car is "hard-tuned"(specifically tuned for E85) then putting in regular unleaded will most likely cause severe rich-mixture issues and may also lead to detonation due to the timing advanced for higher octane.