Ford 1996 F-150 Super Duty, Owner'S Manual, Page: 117 / 224

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[SV09050( ALL)06/95]
In some parts of the country, “regular” grade
fuels are sold with octane ratings of 86 or even
less, especially in high altitude areas. We
recommend that you do not use these fuels.
Always use a fuel with an octane rating of 87,
even if it is sold as a “midgrade” or “premium.”
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[SV09200( ALL)06/95]
Do not be concerned if your vehicle sometimes
knocks lightly when you drive up a hill or when
you accelerate. However, if a fuel with the
recommended octane rating knocks heavily
under all driving conditions or knocks lightly
driving at cruising speed on level roads, see
your dealer or a qualified service technician.
Persistent, heavy knocking can damage the
engine.
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[SV09435( ALL)05/95]
Fuel quality
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[SV09450( ALL)05/95]
If you are experiencing starting, rough idle or
hesitation problems when the engine is cold, it
may be caused by fuel with low volatility. Try a
different brand of fuel. If the condition persists,
see your dealer or a qualified service technician.
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[SV09452( ALL)05/95]
Using a high-quality fuel makes your vehicle
more responsive and maintains its good fuel
economy and emissions by:
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[SV09455( ALL)05/95]
❑
protecting your fuel system from rusting.
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[SV09460( ALL)05/95]
❑
preventing the fuel lines from freezing.
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[SV09465( ALL)05/95]
❑
improving vehicle starting and warm-up.
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[SV09470( ALL)05/95]
❑
protecting the fuel system from vapor lock in
very hot weather, which causes the engine to
hesitate or stall and makes restarts difficult.
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[SV09475( ALL)05/95]
❑
minimizing deposits in fuel injectors,
combustion chambers, and on intake valves.
File:ltsvm.ex
Update:Tue Jun 20 16:44:35 1995