that's a bad sign of engine trouble.
Too much heat.
slavery
what causes a Honda CRV to over heat
Heat from the Sun.
why do aaa batteries overheat
Overheating causes pigs to over heat.
when you heat water it causes steam because over a certain point of temperature it causes watervaper
my mk3 astra 2.0l 16v red top is over fueling when turning over.
The scorching Texas dessert heat over the years! :)
it was designed with a different climate in thought
Low coolant.
you have a blown head gasket