Hi Guys,

I am looking at the flow diagram below and if I am reading it right.
The coolant that is heated by the turbo and oil cooler never goes through the radiator. It seems to re circulate back into the head.

I would not think this would be ideal for engine cooling. I hate to question toyota engineering but this does not seem logical
Can anyone shed some light on this or knows of other toyota motors using the same cooling method?