Porsche 928 S4 – Owner’s Manual |
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Model Year 1987 From
the “Porsche 928 S4 Owner’s Manual”, available from 928 Specialists. |
Break-in
Hints for the first 1,000 miles/1,600 kilometers There
are no specific break-in rules for your Porsche. However, by taking a few precautions you can help extend
the service life and performance of your engine. During
the first 1,000 miles/1,600 km, all working components of the engine adjust
to each other to a certain degree.
Therefore: Avoid full throttle starts and abrupt stops. Change speeds frequently. Vary the throttle load. Do
not exceed maximum engine speed of 5,000 rpm (revolutions per minute). Do
not run a cold engine at high rpm or in Neutral. Do
not let the engine labor, especially when driving uphill. Shift to the next proper gear in time
(use the most favorable rpm range). There
may be a slight stiffness in the steering, gearshifting or other controls
during the break-in period which will gradually disappear. Never lug the engine in high gear at low speeds. This rule applies all the time, not just during the break-in period. Breaking-in brake pads Brake
pads do not have maximum braking efficiency when the car is new. Therefore, more pedal force is necessary
during the first 100 to 150 miles/150 to 250 km. This also applies to replacement brake pads. Breaking-in new tires New
tires do not have maximum traction.
They ten to be slippery.
Break in new tires by driving at moderate speeds during the first 60
to 120 miles/100 to 200 km, and longer braking distances must be anticipated. Engine Oil Consumption
During
the break-in period oil consumption may be slightly higher than normal. As
always rate of oil consumption depends on the quality and viscosity of oil,
the speed at which the engine is operated, the climate, road conditions as
well as the amount of dilution and oxidation of the lubricant. Engine Exhaust
WARNING
Fuel economy will vary depending on where, when and how you drive, optional equipment installed, and the general condition of your car. A car tuned to specifications and correctly maintained, will help you get maximum fuel economy.
The EPA estimated m.p.g. is to be used for comparison purposes, actual mileage may be different from the estimated m.p.g., depending on your driving speed, weather conditions and trip length. Your actual highway mileage will probably be less than the estimated m.p.g. Please
observe all local and national speed limits. Fuel filler cap
The
fuel filler cap is located under the flap in the rear quarter panel behind
the right rear wheel. When
putting the cap back on the fuel filler neck, be sure cap is securely
seated. Twist cap counter-clockwise,
until is stops with an audible click. We recommend you turn off the engine when filling the fuel tank. Fuel tank capacity Fuel
tank capacity is listed under “Filling
Capacities”. Porsche does not recommend the use of fuel additives. If
you lose your fuel filler cap, replace it immediately with a cap of the same
design to reduce the possibility of a fire in a collision. Your
Porsche is equipped with a catalytic converter and must use UNLEADED FUEL
ONLY. Minimum octane rating
is 95 RON/85 MON “Premium unleaded fuel” 990 CLC or AKI). Federal low prohibits use of leaded
fuel in this vehicle. Regular
unleaded fuel with a minimum octane rating of 91 RON / 82 MON (87 CLC or AKI)
can be used temporarily, due to a built-in knock control, if premium unleaded
fuel is not available. In this
case avoid full throttle operation.
The use of UNLEADED FUEL ONLY is critically important to the life of
the catalytic converter.
Deposits from leaded gasolines will ruin the converter and make it
ineffective as an emission control device. Cars
with a catalytic converter have a smaller fuel tank opening, and gas station
pumps have smaller nozzles. This
will prevent accidental pumping of leaded fuel into cars with a catalytic
converter. Unleaded
fuels may not be available outside the continental U.S. and Canada. Therefore, we recommend you do not
take your car to areas or countries where unleaded fuel may not be available. Octane ratings Octane
rating indicates a gasoline’s ability to resist detonation. Therefore, buying the correct octane
gas is important to prevent engine “knock”. The
RON octave rating is based on the research method. The CLC (U.S. Cost of Living Council octane rating) or AKI
(antiknock index) octane rating usually displayed on
U.S. gasoline pumps is calculated as research octane number plus motor octane
number, divided by 2, that is written as:
The
CLC or AKI octane rating is usually lower than the RON rating: 95 RON equals . . . . . .
. . . . . . . . . . 90 CLC or AKI WARNING Do
not use any unleaded fuel with octane ratings lower than 95 RON or 90 CLC or
AKI. Never carry additional fuel in portable containers in your car. Such containers, full or partially empty, may leak, cause an explosion, or result in fire in case of a collision. Gasolines containing alcohol Gasoline
containing alcohol is available at gas stations in some areas. The gas pump may not be labeled to
identify that alcohol is present in the gasoline. If it is labeled, it may not identify what amount and
type(s) of alcohol are used. We
recommend you do not use fuels where the alcohol content cannot be
identified. Gasolines containing methanol Do
not use
fuels containing methanol (methyl alcohol, wood alcohol). The use of fuel containing this type
of alcohol can result in vehicle driveability and performance problems and
may damage critical parts of your vehicle’s fuel and emission control
systems. Gasolines containing ethanol A
mixture of unleaded gasoline and ethanol (ethyl alcohol, grain alcohol) is
sold in some areas. This mixture
is sometimes called “Gasohol”.
You may use gasohol in your Porsche, provided it contains no more than
10% ethanol, and the octane requirements for your vehicle are met. However, we strongly recommend
switching back to gasoline without ethanol, if you experience any of the
following problems with your vehicle:
Continued
use of gasohol under these conditions may cause costly damage to the fuel
system and the emission control system of your vehicle. |
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