Can the 2010 Impala use E85 ethanol fuel?
Only vehicles with the 3.5L V6 engine (VIN Code K) or the 3.9L V6 engine (VIN Code M) can use either unleaded gasoline or ethanol fuel containing up to 85% ethanol (E85). These vehicles have a yellow fuel cap to identify them as E85 compatible. All other engines should use only the unleaded gasoline described under Gasoline Octane on page 6-6. (Page 26)
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