Fuel E85 (85% Ethanol) - GMC 2007 Yukon XL Owner's Manual

However, E85 (85% ethanol) and other fuels
containing more than 10% ethanol must not be
used in vehicles that were not designed for
those fuels.
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.
430

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 538.
If your vehicle has the 5.3L V8 engine (Code 0) or
the 5.3L V8 engine (Code 3), you may use
either regular unleaded gasoline or ethanol fuel
containing up to 85% ethanol (E85); also see Fuel
on page 428. In all other engines, use only the
unleaded gasoline described under Gasoline
Octane on page 428.
Only vehicles that have the 5.3L V8 engine
(Code 0) or the 5.3L V8 engine (Code 3) 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
(http://www.eere.energy.gov/afdc/infrastructure/
locator.html) that can help you find E85 fuel.