Toyota 2004 Prius Owner's Manual page 312

ENGINE LUBRICATION
Oil capacity (drain and refill), L (qt., lmp.
qt.):
With filter 3.7 (3.9, 3.3)
Without filter 3.4 (3.6, 3.0)
"Toyota Genuine Motor Oil" is used in your
Toyota vehicle. Use Toyota approved "Toyota
Genuine Motor Oil" or equivalent to satisfy the
following grade and viscosity.
Oil grade:
API grade SL "Energy−Conserving" or
ILSAC multigrade engine oil.
312
Recommended oil viscosity:
SAE 5W−30
oil008
Outside temperature
Please contact your Toyota dealer for further
details.
COOLING SYSTEM
Total capacity, L (qt., Imp. qt.):
For gasoline engine 8.6 (9.0, 7.5)
For electric motor
and inverter and
converter 2.7 (2.9, 2.4)
Coolant type:
"Toyota Super Long Life Coolant" is
used in your Toyota vehicle at factory
fill. In order to avoid technical prob-
lems, only use "Toyota Super Long Life
Coolant" or similar high quality ethyl-
ene glycol based non−silicate, non−
amine, non−nitrite, and non−borate
coolant with long−life hybrid organic
acid technology. (Coolant with long−life
hybrid organic acid technology is a
combination of low phosphates and or-
ganic acids.)
Do not use plain water alone.
Please contact your Toyota dealer for
further details.