Coolant spewing from my overflow hose
, parked on the freeway for an hour when it's a 113' outside
If you choose to stop on the side of the Fwy (probably not a good idea), not sure why you would want to sit there for an hour but to each their own! :rolleyes:
Point is as long as you do not overfill it, it will not overflow, if you do, it will overflow till it has dumped enough fluid to equalize.
Dumping the excess will not cause your engine to overheat. If it overheats you have other issues.
If you are concerned with the environmental effects of ethylene glycol getting on the ground you had better kill all of the Greater wax moths in the world.
"The caterpillar of the Greater wax moth,
Galleria mellonella, has
gut bacteria with the ability to degrade
polyethylene (PE) into ethylene glycol"
