BYD F7-1 Owner's Manual page 110

Friendly Tips
Do not add any rust inhibitors or
other additives to the cooling
system; additives may be
incompatible with the coolant or
engine components; it is not
recommended to mix coolants of
different brands and models
476ZQA engine
Adding engine coolant
Upper limit scale mark
Lower limit scale mark
If the coolant level in the expansion
tank is at or below the lower limit (MIN)
scale mark, you should add the
coolant to make the liquid level rise to
Self Maintenance 6-4
BYD F7-1, F7-2, F7-3 Owner's Manual
the upper limit (MAX) scale mark.
Check whether the cooling system
leaks.
Only use BYD approved coolant. Do
not add any extender. Do not mix
coolants of different brands and
models.
Warning
The coolant may spurt and

result in severe burns if the
expansion tank is opened
before the engine is completely
cooled down.
Before opening the expansion

tank, make sure that the engine
and expansion tank have
cooled down.
Add to this level
1. Confirm that the engine, radiator
and expansion tank have cooled
down;
2. Rotate the expansion tank cover
counterclockwise (do not press
down) until removed. In this way,
the residual pressure in the cooling
system will be released in full;
3. The coolant level should reach the
bottom of the neck of the injection
port. If inadequate, add BYD
approved coolant. Pour the coolant
slowly to prevent overflow. If
overflow occurs, immediately clear
all of the discharge, or else it will
damage the components inside the
cabin;