2011 Ford Mustang Shelby GT500 Supplement 1st Printing - Page 27

2011 Ford Mustang Manual

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Maintenance After any coolant has been added, check the coolant concentration (refer to the Maintenance and Specifications chapter of your Owner'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 run on Premium fuel with an (R+M)/2 octane rating of 91 or higher. For best overall performance, SVT (R+M)/2 METHOD recommends using Premium fuel with an (R+M)/2 octane rating of 93 or higher where available. The performance gained by using higher octane fuel will be most noticeable in hot weather or in severe duty applications. Recommended fuel is an important part of the proper maintenance and optimal performance of this vehicle. The use of gasoline with an (R+M)/2 octane rating lower than 91 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 gasolines labeled as ЉPremiumЉ with (R+M)/2 octane ratings less than 91. 91 27 2011 05+ Mustang (197) Supplement, 1st Printing USA (fus)

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After any coolant has been added, check the coolant concentration (refer
to the
Maintenance and Specifications
chapter of your
Owner’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 run on
Premium fuel with an (R+M)/2
octane rating of 91 or higher. For
best overall performance, SVT
recommends using Premium fuel
with an (R+M)/2 octane rating of 93 or higher where available. The
performance gained by using higher octane fuel will be most noticeable
in hot weather or in severe duty applications.
Recommended fuel is an important part of the proper maintenance and
optimal performance of this vehicle. The use of gasoline with an (R+M)/2
octane rating lower than 91 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 gasolines labeled as
²
Premium
²
with
(R+M)/2 octane ratings less than 91.
91
(R+M)/2 METHOD
Maintenance
27
2011 05+ Mustang
(197)
Supplement, 1st Printing
USA
(fus)