Toyota 2014 Prius Manual page 502

Hybrid battery (Traction battery)
Type
Voltage
Capacity
Quantity
Overall voltage
Lubrication system
Oil capacity (Drain and
refill reference*)
With filter
Without filter
*: The engine oil capacity is a reference quantity to be used when changing the
engine oil. Warm up the engine and turn off the hybrid system, wait more
than 5 minutes, and check the oil level on the dipstick.
■
Engine oil selection
"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: ILSAC GF-5 multigrade engine oil
Recommended viscosity: SAE 0W-20
Outside temperature
Nickel-metal hydride battery
7.2 V/module
6.5 Ah (3HR)
20 modules
144 V
3.9 qt. (3.7 L, 3.3 Imp. qt.)
3.6 qt. (3.4 L, 3.0 Imp. qt.)
SAE 0W-20 is the best choice for
good fuel economy and good
starting in cold weather.
If SAE 0W-20 is not available,
SAE 5W-20 oil may be used.
However, it must be replaced
with SAE 0W-20 at the next oil
change.
6-1. Specifications
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