I've said many times here that synthetic engine oil is the right choice for extreme cold climates. If I lived in Minnesota, North Dakota, Alaska, etc. I'd run a synthetic engine oil during the winter too. I asked what benefit synthetic would have given ME who lives in "balmy California".Not everyone lives in balmy California . . .
Ever done a 'cold' start-up at -20F . . . . ?
They are a harsh damaging procedure without engine heaters.
Have also got 55+ years of driving gas & diesel, and 43 years operating heavy diesel equipment.
Synthetic oil has its place.
https://wranglertjforum.com/search/105255/?q=Minnesota&c[users]=Jerry+Bransford&o=date
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