& this brings up another point/reason that I was about to inject into this discussion > 

I will almost Never shut My Van off while the Rad’Fan is On & since I live about 600ft above

Downtown ABQ, pretty much every time I am returning home from down there during Summer

Months, the Temp will rise to the 198º point & fan will come on & generally be on when I arrive in

My driveway, so I have Myself in the habit of switching the fan On High a few blocks from home

which will lower the temp back into the Mid 180s just before backing into driveway & I shut down

& the Van is happy & so I am happy ~

        As to Your question, Eric, about Eng’ off so no H2OPump action,,, It’s a valid question but I

have always suspected that some Convection flow does possibly happen due to the cooling of the

Rad’ as long as the T’stat is open ~

                                                                        ORR ~ DeanB

> On 8 Mar , 2023, at 4:06 PM, Eric Caron <ericcaron96@COMCAST.NET> wrote:
> 
> I also remember being so surprised when the fan would stay on after turning engine off.
> 
> How can that really help?  The water pump is off so what real good can that be doing except running down the start battery? 
> 
> But, so far it has not been a problem so I just smile and walk away even as the small air plane noise continues from the parking spot.