Accidentally fueled my car with E 85 instead of Unleaded 87?

2023 KIA CARNIVAL
2,900 MILES
Avatar
WESSELVORSTER
  • MEMBER
  • 1 POST
Good day, I was wondering if someone could give advice. I accidentally fueled my car with E 85 instead of Unleaded 87. Should I go into the dealer to drain the tank, or would it be okay running like this and topping it off with a higher-octane fuel?
Sep 2, 2023 at 8:54 AM
Advertisement
Avatar
CANNON1349
  • ✓ASE Certified Mechanic
  • 861 POSTS
  • ASE Certified Mechanic
Hello,

If your vehicle is under warranty, I would ask if it is covered under the warranty to drain the gas and flush out the system. In a fuel system designed for gasoline with an octane rating of 87 or higher, ethanol 85 can damage the fuel lines and even the engine over time, as it is very corrosive. Otherwise, if damage occurs as a result of this, the warranty will be voided when they find that it is/was filled with ethanol gas.

Hope this helps,
William
Sep 2, 2023 at 6:17 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.