ok ive got a challenge for anyone out there .1 car must still have a stock radiator system,with the stock fluid.i need to know 2 things idle time to heat up to op temps and driving time to heat up.i replaced the fluid with engine ice and i my rush to replace the fluid i forgot to test it first.im getting these numbers to keep things unbiased 32 minutes under normal driving conditions stops cold at 219 idle about 47 minutes .

 

The times will vary due to a number of factors other than the liquid type. The ambient air temperature and starting temperature will also affect the amount of time it takes to reach operating temperature.

 

Don't know about idling, but mine is at operating temp within a very short time. It's about 1 mile from my house to the freeway, and by the time I'm up to 75, its pretty much at operating temp.

Hope this helps

dave