[Bob In Ct]

One other potential problem is that when you're coasting in neutral for any distance, all the coolant in the radiator is getting to ambient. When you start spinning the engine again a lot of cooler than normal fluid enters the engine very quickly. This rapid cooling of various components could possibly cause some damage. This will happen even with a thermostat since the thermostat will not close until the coolant makes its way to the top of the engine.

Just my $0.02 worth.

Bob