Porsche 911 Turbo User Handbook Manual page 42

Noise. components are more rigid,
moving parts lighter, and tolerances
The 911 Turbo models comply reduced to a minimum. High-
with all current noise regulations – efficiency silencers in durable
without resorting to engine en- stainless steel help to minimise
capsulation. To do that, we've noise throughout the life of the car.
eliminated noise at source: engine All that remains, both inside and
out, is the 911 Turbo sound.
Servicing.
Longer service intervals are not
only more convenient, they
are also easier on resources.
As well as benefiting the wider
environment, there are two
obvious advantages for you: a
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lower cost of ownership and Fuel.
more time on the road with your
Porsche. The current Porsche sportscar
model range is already compatible
For full details of service intervals, with fuels that have an ethanol
please refer to the price list. content of up to 10 %. A 'biofuel'
made from naturally replenishing
materials, ethanol has a positive
911 Turbo |
impact on the carbon dioxide
balance since the plants grown for
its production also absorb carbon
dioxide from the atmosphere.
Fuel system.
In the fuel supply system, we've
minimised the evaporation of
hydrocarbons. This is achieved
through a combination of active
carbon filter and special fuel-tank
coating. All fuel lines are made
from aluminium, while those
carrying vapours are made from
multi-layer plastic.
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Environment