How often should the engine coolant be changed in my 2003 V-6 Camry? I am getting conflicting informantion. Thanks in advance.

 

I suggest do it quarterly, some change it yearly.

 

Have you checked the owners manual?

What color is the coolant, red or pink?

The original Toyota brand coolant installed in the car when built was long life which was something like 5 years or 150K miles.

Not all coolant brands/types are long life. If the original coolant (pink in color) was replaced with something else, the replacement coolant may also long life but another brand or normal life which is about 2 years.