Chrysler 2008 Aspen, Owner'S Manual, Page: 341 / 479

Fuel Requirements
Your vehicle will operate on both unleaded gasoline with
an octane rating of 87, or E-85 fuel, or any mixture of
these two.
For best results, a refueling pattern that alternates be-
tween E-85 and unleaded gasoline should be avoided.
When you do switch fuels, it is recommended that you:
•
do not switch when the fuel gauge indicates less than
1/4 full
•
do not add less than five gallons (19 Liters) when
refueling
•
operate the vehicle immediately after refueling for a
period of at least five minutes
Observing these precautions will avoid possible hard
starting and/or significant deterioration in drivability
during warm up.
NOTE: When the ambient temperature is above 90°F
(32°C), you may experience hard starting and rough idle
following startup, even if the above recommendations
are followed.
Selection Of Engine Oil For Flexible Fuel Vehicles
(E-85) and Gasoline Vehicles
FFV vehicles operated on E-85 require specially formu-
lated engine oils. These special requirements are included
in Mopar
t
engine oils, and in equivalent oils meeting
DaimlerChrysler Specification MS-6395. The manufac-
turer only recommends engine oils that are API Certified
and meet the requirements of Material Standard MS-
6395. MS-6395 contains additional requirements, devel-
oped during extensive fleet testing, to provide additional
protection to DaimlerChrysler Corporation engines. Use
Mopar
t
or an equivalent oil meeting the specification
MS-6395.
340 STARTING AND OPERATING