02 Service and maintenance
13
Turbocharger Operating Tips
02
In order to maximize the efficiency and oper-
ation of your vehicle, the following points
should be observed:
1. Oil change and filter replacement every
10,000 miles/16,000 km, or at a time inter-
val based on the type of driving and
conditions as detailed in your Owner's
Manual. You should maintain a record of
these services (repair order receipts).
2.
Do not use engine oil additives as
they may adversely affect the engine.
Before switching off the engine, let it operate
at idle for a short time to allow the spinning of
the turbocharger compressor's turbine vanes
to slow. After hard driving, this idle time
should last a couple of minutes, during which
the vanes will slow and the compressor will
cool down while still receiving oil lubrication.
If the turbine vanes are spinning at high
speeds when the engine is switched off,
there is a great risk of heat damage and/or
turbine seizure due to lack of lubrication.
Do not race the engine just prior to
switching off!
IMPORTANT
Never race the engine
immediately after
starting
. Oil flow may not reach some lubri-
cating points fast enough to prevent turbo-
charger damage.
VCNA XC90 warranty manual week 1146.book Page 13 Friday, November 4, 2011 11:44 AM
