I almost bought a cooldown timer from BullyDog a while back; but...

http://www.dieselinfo.com/tech_TD-fact-Fiction.cfm
(See myth 7 near the bottom of the article)

These turbos use solid, free-float bearing (not ball bearings or the "babbit" bearing mentioned in the above article, and if I am not mistaken the shaft does not even have a thrust bearing). Oil cannot coke in these bearings as it can in the ball bearings and so-forth...

I would imagine it is still a good idea to let the truck idle for 15-30 seconds before shutdown, however it seems to me that an actual timer is a bit excessive.

 

I posted to another thread my timing of how long it took to drop the truck to 300 deg F preturbo in two different scenarios.

First scenario was coming in off the highway after a 20 mile or so trip(unloaded) in 80 deg F ambient conditions. Traveled a couple blocks on a secondary road to get to my parking place. The EGT was down to under 350 deg F when I pulled into the parking spot and down to 300 deg F in less than 15 seconds.

Second scenario was on my way home from work. I live 4.0 miles away and I climb 400+ feet in the last mile before I get to the house, and turn one very short block off the street to get to my house. The truck hits around 700 to 750 deg F up the hill if I'm just calmly driving up it. With 65ish deg F ambient outside temps the truck was down to 410 deg F or so when I backed into my driveway and it took another minute to drop to 300. It usually takes less than 20 seconds to drop to 350 deg F where my CES module shuts it down if I turn off the ignition and let it.

Even towing my 10000+ toyhauler around the truck will rarely idle for more than a minute even in 100+ deg F ambient outside temps. I would think that three minutes would be more than enough for the truck even if you were to be hard on the throttle towing a load up a hill and then to pull over stop without any cool down driving.

Daryl

 

I'll remain old fashion and let my truck cool down after heavy loads......I know it works.

 

Looking at the Ford Accesory link above it seems like the system retails for between 190 - 270 depending different options and looks to be asimple plug and play option. Has anyone had the system above installed post purchase or done the install themselves?

 

No sure if it is plug and play...

I've heard some say unless you are GOOD, don't do it....

but didn't matter to me... $100 or so for the install by the dealer and included in my warranty was incentive enough for me not to have the "finger pointing" if anything went wrong.... (and besides - I shy away from manual labor )