Ethanol (E10) has been introduced to gasoline in order to meet strict EPA standards.
The addition of Ethanol has caused many problems such as:
Hard Starts - Rough Running - No Power -Check Engine Lights - Lean Codes
Engine Deposits - Corrosion - Catalytic Converter Failures, etc. due to phase separation.
Phase Separation is a major problem with E10 Gas
Protect your engines:
Gas RX and Octaplus will Prevent Phase Separation