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I called BS on the block heater story for 8 winters straight, then my own truck proved it at minus 15
For 8 winters I rolled my eyes at the old guys in the shop who swore a block heater matters more than anything else when it gets cold. I grew up thinking a good battery and fresh glow plugs were all a diesel needs, and I ran my 7.3 that way in Iowa for a long time with no real trouble. Last January we got a cold snap that hit minus 15 and my truck cranked so slow I thought the starter was done. A guy I work with named Dale told me to plug in overnight and stop being stubborn. Next morning it fired up like it was July, no rattle, no white smoke, just clean. I checked the coolant temp with my scan tool and it was sitting around 90 degrees before I even turned the key. Now I plug in any time it drops under 20 and I have not touched my glow plugs since. So what temp do you all start plugging in at, or do you just run it and hope?
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paigeharris1mo ago
Laughing at how Dale is out here doing the Lord's work one stubborn diesel owner at a time. Eight winters of calling it a myth and then one cold snap turns you into the guy telling everyone else to plug in. My rule is simple, if the forecast is below 25 I drag the cord out, and if it is below 10 I might even throw a blanket over the hood like a weirdo. The scan tool reading 90 before you even cranked is the part that sells it, that is basically free heat you did not have to fight for. Dale deserves a case of beer for that one, honestly.
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