Question about my block heater

[hhowell1990]

I've got an 02 7.3 that's got a block heater from the factory, that judging by the looks of the plug when i looked at it today has never been used before, it's supposed to get down in the mid to high 20's next week, would my block heater be safe to use if the cap over the plug had water in it?

[cj45lc]

Originally Posted by hhowell1990

I've got an 02 7.3 that's got a block heater from the factory, that judging by the looks of the plug when i looked at it today has never been used before, it's supposed to get down in the mid to high 20's next week, would my block heater be safe to use if the cap over the plug had water in it?

More than likely it's fine but you could plug it in to see for grins. You could also check it with voltmeter set to ohms, it should have quite a bit of resistance. BTW if your GP system is working properly the 20's or teens shouldn't be anything to worry about, I've plugged my block heater in one time just to see if it worked but I never use it.

[strokin&stang'n]

Almost positive it's alright. Just clean your contacts (prongs) on the cord with little piece of scotch brite or sand paper make sure they clean and plug her in.If it sparks right away you know its working. If not going to use it alot I like to put dielectric grease right in the cap that goes over the plug works good.

[ToMang07]

Originally Posted by hhowell1990

I've got an 02 7.3 that's got a block heater from the factory, that judging by the looks of the plug when i looked at it today has never been used before, it's supposed to get down in the mid to high 20's next week, would my block heater be safe to use if the cap over the plug had water in it?

As long as you have an anti-gel and good batteries, you really don't NEED to plug it in until it gets to 0*.

I won't plug mine in until it goes below 10*, I always plu it is below 0*.

It was -5 here, this morning. (NOT including wind-chill.)