276TECHNICAL SPECIFICATIONS  
Inspect the wheel mounting surface prior to 
mounting the tire and remove any corrosion or 
loose particles.
Wheel Mounting Surface
Tighten the lug nuts/bolts in a star pattern until 
each nut/bolt has been tightened twice. Ensure 
that the socket is fully engaged on the lug nut/
bolt (do not insert it halfway).
NOTE:
If in doubt about the correct tightness, have 
them checked with a torque wrench by an 
authorized dealer or service station.
After 25 miles (40 km), check the lug nut/bolt  torque to be sure that all the lug nuts/bolts are 
properly seated against the wheel.
 Torque Patterns
FUEL REQUIREMENTS   
3.6L ENGINE
This engine is designed to meet all 
emissions regulations and provide 
excellent fuel economy and 
performance when using high-quality 
unleaded “Regular” gasoline having an octane 
rating of 87 as specified by the (R+M)/2 method.  The use of higher octane “Premium” gasoline will 
not provide any benefit over “Regular” gasoline in 
these engines.
While operating on gasoline with an octane 
number of 87, hearing a light knocking sound 
from the engine is not a cause for concern. 
However, if the engine is heard making a heavy 
knocking sound, see an authorized dealer 
immediately. Use of gasoline with an octane 
number lower than 87 can cause engine failure 
and may void or not be covered by the New 
Vehicle Limited Warranty.
Poor quality gasoline can cause problems such 
as hard starting, stalling, and hesitations. If you 
experience these symptoms, try another brand 
of gasoline before considering service for the 
vehicle.
5.7L ENGINE
Do not use E-85 flex fuel or ethanol blends 
greater than 15% in this engine.
This engine is designed to meet all 
emissions regulations and provide 
satisfactory fuel economy and 
performance when using high-quality 
unleaded gasoline having an octane range of 
87 to 89 as specified by the (R+M)/2 method. 
WARNING!
To avoid the risk of forcing the vehicle off the 
jack, do not tighten the lug nuts/bolts fully 
until the vehicle has been lowered. Failure to 
follow this warning may result in personal 
injury.
20_LX_OM_EN_USC_t.book  Page 276