Porsche 911 Carrera - Manual (Page 240)

Engine Oil Recommendation
Recommended oil viscosity ranges dependent on ambient temperatures
Ambient temperature seasonal SAE Viscosity Range engine oils
generally above -13F/-25C SAE 0W-40, 5W-40, 5W-50 approved by Porsche
generally below -13F/-25C SAE 0W-40 approved by Porsche
Suitable oils are:
Use only engine oils tested and approved by Porsche (Porsche approval list). Your authorized Porsche dealer will be pleased to advise you.
You will find a sticker in the engine compartment which provides information (manufacturer) about the initial factory filling of your engine.
Generally you can find the manufacturer suggestions on the oil containers or as a bulletin on the market.
Oil change
The engine oil has to be changed at the intervals
listed in your Maintenance Schedule.
Please observe the chapter ”CAPACITIES” on
page 335.
We recommend that you have the engine oil
changed at your Porsche dealer, who has the
required oils and the necessary filling equipment.
If you suspect an oil leak in the engine have your
dealer check it out immediately.
All current engine oils are compatible with each
other, i. e. when making an oil change it is not
necessary to flush the engine if you wish to use a
different brand or grade of oil. Since, however,
each brand of oil has a special composition,
you should, if possible, use the same oil brand
if it becomes necessary to top up between oil
changes.
Porsche engines have long intervals between
oil changes. You can make best use of these
long oil change intervals by using multigrade oils
since these are largely independent of seasonal
fluctuations in temperature.
If your vehicle is used frequently in stop-and-go
traffic in cold weather, the engine will not always
be completely warmed up. Condensation from
products of combustion may accumulate in the
oil. In this case, it is advisable to change the oil
more frequently so that your engine once again has
100% efficient engine oil.
Engine oil performance class
Engine oil is not only a lubricant, but also serves to
keep the engine clean, to neutralize the dirt which
penetrates into the engine through combustion
and to protect the engine against corrosion. To
perform these functions, the oil is provided with
additives which have been specially developed
for these functions. The efficiency of an oil is
expressed, for example, by the API, ILSAC or ACEA
classifications.
Viscosity
Like all liquids, engine oil is viscous when cold,
and thin-bodied when warm. The viscosity of an oil
is expressed by its SAE class. For cold viscosity
(measured at temperatures below 32°F /0°C )
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Maintenance, Car Care