How long to let engine cool off?

[Snagglefoot]

Grab the top rad hose to get a quick assessment.

 

[mobilnissan1991]

Replacing the plugs with some Motorcraft SP589 Platinums. Should these be ok for 100k miles?

 

[twouvakind]

Gee, how long does a dealership let a vehicle cool down for similar work lol!?

 

[Donald]

I would say an hour is all that is needed. Friends don't arrive at friends homes at 6AM.

 

[Urshurak776]

An hour should be fine. Lift the hood. Go to breakfast, good to go when you get back.