Coldest Temp You Ever Cranked Over Your Motor?

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Originally Posted By: BumpDraft2004
And drawing in fresh air no less. You are brave.


And I didn't even warm the Vette up before driving it that day either! :)
 
-38 f was the coldest I could get a Ford Superduty diesel to start with a block heater(trust me it doesn't sound pretty even with synthetic oil). They don't start without a block heater below
-30. That is why we just let them run 24 hours a day when it got below -30.
 
Originally Posted By: ThirdeYe
Somewhere between -25 and -30F.


Same here. Lowest I can remember is -26 on the gauge in my pop's Blazer. Fired right up. And that was several years ago when it likely had bulk Pennzoil 5w-30 in the crankcase.
 
Current Mazda = 7*F, using 10w30 dino.

I live in Texas, so 7* is pretty cold for us. I just changed the oil though and used 5w30. While it started up just fine with 10w30, the 5w30 cranks faster and makes me feel better.
 
Wow, some pretty impressive start temps we're seeing here.
Are most of these low negative temps with the first crank or do some take a few times to get the oil all the way up, if it isn't exactly a very compact engine?
 
My superduty at -30 and colder would only start 50% of the time if at all. It would take several attempts..if it started before the battery gave out in 4-5 glow attempt cycles great.. If not I had to call a heater gtruck to warm up the engine and fuel atc.
 
-35 F in west central Indiana in the late '70s. And this temperature was recorded on an alcohol thermometer inside my garage. Had a 300 watt light bulb by the side of the engine all night and a blanket over the hood. The battery was inside over a heat vent and it still was hard to start. BTW, it was a Ford 2.3 4-cylinder with 10W-30 oil.

The morning this happened, Cincinnati, OH was -49 F, colder than the north slope of Alaska.
 
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