[Autoban]

I don't on my '86 3.2L. On air-cooled airplane engines we also rather have the engines cool down slow to prevent shock cooling. This means even descending from altitude as slow as possible with partial power. The faster metal warms and cools (extends and retracts) the more stress it gets. There is no real benefit of cooling the engine as quick as possible unless you have a vapor lock issue in your fuel system.