Toyota PRIUS 50 2020 Series Owner's Manual page 386

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6-3. Do-it-yourself maintenance
Engine oil
With the engine at operating temperature and turned off, check the oil
level on the dipstick.
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Checking the engine oil
Park the vehicle on level ground. After warming up the engine
1
and turning off the hybrid system, wait more than 5 minutes for
the oil to drain back into the bottom of the engine.
Holding a rag under the end,
2
pull the dipstick out.
Wipe the dipstick clean.
3
Reinsert the dipstick fully.
4
Holding a rag under the end, pull the dipstick out and check the
5
oil level.
1
Low
2
Normal
3
Excessive
Wipe the dipstick and reinsert it fully.
6