Block heater

[BigLongF350]

Just need some tips on how long to plug the heater in (plan on using a timer) when the temps dip below freezing.

[jesilvas]

Most people do about 4hrs or so before start.

[2 stroker]

I go about 3hrs if the temp is down around 25* it will bring the coolant temp up to around 90* on my edge. Here on the west coast it does not get that cold.
2 stroker

[jrtcbmw]

In the same boat of getting a timer for my block heater.

I have been thinking at least 3 if not 4 hours before the morning.

[forddieseldoctor]

I think last year I did 3 hours, but I'm not 100% on that. I would try out different times and see what the shortest time you can run it to get optimal results.

[cory403]

This am it read 17 on the thermometer and I had the timer running for a hour and a half before getting in at the gauge read 84 ect and 76 eot and it started very nicely. But I also have 540 rotella in there.

[majek5]

After 3-4 hours it will be as warm as it is gonna get.

[BigLongF350]

Thanks guys. I want to try and keep it to a minimum just for the sake of the power bill.

[lightninmike]

3 hrs here. Helps alot when its cold and windy at 3 am

[dieselmatt]

I also do 3 hours when the temps get in to the 30s or lower. I'm sure I could do it for less, but the pennies it costs to run it a little longer vice the cost of engine parts steer me to plug it in for 3 hours.