Originally Posted by aero3685
The one thing I heard from somewhere before is something about the water pump. When you are coasting, it slows down alot, and cant cool as much. Im not sure... something like that. I would like to know the answer though.
yes the water pump will be going slower and cooling less, however the engine wouldn't need the extra cooling because it would be going slow as well.. and the coasting would provide extra air flow through the radiator/engine bay so coasting is better for your engine when it comes to heat related issues