Chevrolet 2007 IMPALA Automobile User Manual


 
Notice: Your vehicle was not designed for
fuel that contains methanol. Do not use
fuel containing methanol. It can corrode metal
parts in your fuel system and also damage
the plastic and rubber parts. That damage
would not be covered under your warranty.
Some gasolines that are not reformulated for low
emissions may contain an octane-enhancing
additive called methylcyclopentadienyl manganese
tricarbonyl (MMT); ask the attendant where you
buy gasoline whether the fuel contains MMT.
General Motors recommends against the use of
such gasolines. Fuels containing MMT can reduce
the life of spark plugs and the performance of
the emission control system may be affected. The
malfunction indicator lamp may turn on. If this
occurs, return to your authorized GM dealer
for service.
Fuel E85 (85% Ethanol)
The 8th digit of your Vehicle Identification Number
(VIN) shows the code letter or number that
identifies your engine. You will find the VIN at the
top left of the instrument panel. See Vehicle
Identification Number (VIN) on page 399.
If your vehicle has the 3.5L V6 engine (VIN Code K
only), you may use either regular unleaded gasoline
or ethanol fuel containing up to 85% ethanol (E85);
also see Fuel on page 299. In all other engines,
including the 3.5L V6 (VIN Code N), use only
regular unleaded gasoline.
Only vehicles that have the 3.5L V6 engine (VIN
Code K) may use 85% ethanol fuel (E85). General
Motors encourages the use of E85 in vehicles
that are designed to use it. The ethanol in E85 is
a “renewable” fuel, meaning it is made from
renewable sources such as corn and other crops.
Many service stations will not have an 85% ethanol
fuel (E85) pump available. The U. S. Department
of Energy has an alternative fuels website
(www.eere.energy.gov/afdc/infrastructure/
locator.html) that can help you find E85 fuel. Those
stations that do have E85 should have a label
indicating ethanol content. Do not use the fuel if the
ethanol content is greater than 85%.
At a minimum, E85 should meet ASTM
Specification D 5798.
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