2008 Chevy Silverado fuel

2008 CHEVROLET SILVERADO
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WISCONSINMIKE
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  • 1 POST
Engine Performance problem
2008 Chevy Silverado V8 Four Wheel Drive Automatic

an employee of mine filled a chevy siverado 2500 vortec v8 with E85 (this truck does not have a flex fuel package) at the time it had 1/4 tank of regular 87 octane. what should I do? run it out? run it and dilute it with 87 octane as I gain head room in the tank? or siphon it? what risks do I run by driving it out?
Aug 28, 2009 at 10:20 AM
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BRIAN 1
  • ✓Experienced Mechanic
  • 1,030 POSTS
here is what you do,Fueling non-FlexFuel designated vehicles with E85, or with fuels where the concentration of ethanol exceeds the ASTM specification of 10%, will result in one or more of the following conditions:

• Lean Driveability concerns such as hesitations, sags and / or possible stalling.

• SES lights due to OBD codes.

• Fuel Trim codes P0171 and / or P0174.

• Misfire codes (P0300).

• Various O2 sensor codes.

• Disabled traction control or Stability System disabled messages.

• Harsh / Firm transmission shifts.

• Fuel system and / or engine mechanical component degradation.

Notice: Use of fuel containing greater than 10% ethanol in non-E85 designated vehicles can cause driveability issues, service engine soon indicators as well as increased fuel system corrosion. the fuel in the vehicle's tank should be checked for alcohol content.If the alcohol content exceeds 10% , the fuel should be drained and the vehicle refilled with gasoline - preferably one of the Top Tier brands.
Aug 28, 2009 at 12:29 PM
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