TATA Motors Indigo eCS Owner's Manual & Service Book page 150

IMPORTANT INFORMATION
FUEL (PETROL) :
Fuel BS-III : Unleaded regular grade petrol conforming to
IS 2796 DIN 51607 (or equivalent) and octane rating not
less than 87 RON (RON stands for Research Octane
Number) is recommended to be used as fuel.
Fuel BS-IV : Unleaded regular grade BS IV compliant petrol
conforming to IS2796-1994/DIN 51607 (or equivalent) and
RON not less than 91 is recommended to be used as fuel.
It is always recommended to use BS IV Compliant petrol
to get optimum emission performance.
CAUTION
Always use proper fuel of recommended specifications
Lubricants : (Diesel)
Engine Oil : Recommended grade of engine oil conforming
to API CF4+ specification and range of ambient temperature
at which these can be used are given in the table below.
Ambient temp.
in deg. C
-10 deg. & above
Below -10 deg.
148
Engine oil grade
SAE 15W/40 or SAE 15W/50
SAE 5W/20 or SAE 5w/30
FUEL, LUBRICANTS & COOLANTS
Lubricants : (Petrol)
Engine oil : Recommended grade of engine oil conforming
to API-SF/CC specification and range of ambient
temperature at which these can be used are given in the
table below.
Ambient temp.
in deg. C
-10 deg. & above
-15 deg. to 40 deg.
-20 deg. to 40 deg.
-35 deg. to 40 deg.
Transaxle :
Use recommended brand of EP 80 gear oil.
Grease for axle bearings :
Lithium base complex grease
Brake fluid :
IS 8654/DOT 4
Power Steering :
ATF A DEXRON III
Engine oil grade
SAE 20W/40 or SAE 20W/50
SAE 15W/40 or SAE 15W/50
SAE 10W/40 or SAE 10W/50
SAE 5W/30