TATA Motors Indigo Owner's Manual & Service Book - page 115
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MAINTENANCE & CAR CARE - Catalytic Converter & Turbocharger
Avoid
• Push start or tow-starting the vehicle. (Use jump leads).
• Long (not more than 10 sec.) repeat (not more than 3 times)
starting of the Vehicle. Investigate the cause for difficulty
in starting & rectify the same.
• Long idling (to warm-up). If the engine is running rough,
after a cold start.
• Switching 'OFF' the ignition when driving down the hill.
(This will not save fuel).
• Fuel tank getting almost empty.
• Idling the engine with any of the Spark Plug Cable
disconnected, manually, during diagnostic test. (Use
appropriate test equipment).
• Pre-Coating/Painting of Catalytic Converter.
Parking Warning :
Avoid parking the vehicle over inflammable materials, such
as dry leaves, grass, etc., as the exhaust system is hot
enough to initiate "FIRE".
Turbocharger (If fitted) :
Your car is fitted with a turbocharger. Turbocharger is an
efficient supercharging device used in our engine. It makes
use of thermal energy of engine exhaust gases to run a turbine
which in turn drives a compressor to force air under pressure
into the inlet manifold.
Lubrication of Turbocharger :
The turbocharger rotor assembly is supported by two fully
floating bearing bushes in the bearing housing. These bearing
bushes are lubricated with finely filtered engine oil from the
lubrication system of the engine.
Idle the engine for a while (one minute) after starting the engine
and before stopping the engine to ensure adequate lubricating
oil supply to the turbocharger.
Turbocharger Connections :
All turbocharger connections must be leak-proof. Check air
inlet, air outlet, exhaust gas inlet and exhaust outlet
connections as well as oil inlet and outlet connections to the
turbocharger and tighten the connections where required.
Proper maintenance of air filter, oil filter as well as use of
correct grade of oil and adherence to oil change intervals is
essential for proper functioning of the turbocharger.
If you suspect any malfunctioning of the turbocharger, take
the vehicle to the nearest dealer. Do not remove the
turbocharger yourself.