Daniel907
Newbie
Around - 15 or -20 for me, I run a block heater and its starts without a problem. Haven't had a ridiculously cold winter for a few years.
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You might want to check out some videos on cold engine oil pour tests, here's a video I found quick on youtube. Thick oil in winter time is death for your engine...
https://www.youtube.com/watch?v=D6hPKtLCii4
Here's another one, abeit put out by Mobil 1
https://www.youtube.com/watch?v=YnagT6wKfmY