When the engine is cold, check the
level of the engine coolant in the
reservoir.
•The coolant should be at the “cold fill range” as listed on the engine
coolant reservoir and intercooler coolant reservoir.
•Refer to thescheduled maintenance informationfor service interval
schedules.
•Be sure to read and understandPrecautions when servicing your
vehiclein yourOwner’s Guide.
If the coolant has not been checked at the recommended interval, the
engine or intercooler coolant reservoir may become low or empty. If the
reservoir is low or empty, add coolant to the reservoir. Refer toAdding
coolantin this chapter.
Note:Automotive fluids are not interchangeable; do not use engine
coolant, antifreeze or windshield washer fluid outside of its specified
function and vehicle location.
Adding coolant
When adding coolant, make sure it is a 50/50 mixture of coolant and
distilled water. Add the mixture to the coolant reservoir,when the
engine is cool, until the appropriate fill level is obtained.
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2010 05+ Mustang(197)
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10. If necessary, add a50/50 mixtureof coolant and distilled water to
the coolant reservoir until the coolant level is at the “cold fill range” as
listed on the reservoir.
After any coolant has been added, check the coolant concentration (refer
toChecking coolantin theOwner’s Guide).If the concentration is not
50/50 (protection to –34°F/–36°C), drain some coolant and adjust the
concentration. It may take several drains and additions to obtain a 50/50
coolant concentration.
Whenever coolant has been added, the coolant level in the coolant
reservoir should be checked the next few times you drive the vehicle. If
necessary, add enough 50/50 concentration of coolant and distilled water
to bring the liquid level to the proper level.
If you have to add more than 1.0 quart (1.0 liter) of coolant per month,
have your dealer check the cooling system. Your cooling system may
have a leak. Operating an engine with a low level of coolant can result in
engine overheating and possible engine damage.
ENGINE SPARK PLUG INTERVAL
To keep your high performance engine operating at peak performance,
the spark plug service interval is every 45,000 miles (72,000 km).
Reference the Motorcraft Part Numbers chart for the specific spark plug
application.
OCTANE RECOMMENDATIONS
Your vehicle is designed to use
“Premium” unleaded gasoline only,
with an (R+M)/2 octane rating of 91
or higher. SVT recommends using
unleaded gasoline with octane rating
of 93 or higher for optimal performance of this vehicle. Recommended
fuel is an important part of the proper maintenance and optimal
performance of this vehicle. The use of gasoline with octane ratings of 91
or lower can lead to severe mechanical damage to your vehicle, may
degrade vehicle performance and may affect your warranty coverage.
Please see the Warranty Guide for complete information.
SVT does not recommend the use of gasoline labeled asPremiumwith
octane ratings of less than 91.
AIR FILTER
Refer toscheduled maintenance informationfor the appropriate
intervals for changing the air filter element.
91(R+M)/2 METHOD
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2010 05+ Mustang(197)
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