10W-30 oil stopped a 2003 Mazda Tribute V-6 dead in its tracks at -29C years ago.
Later, I had Mobil 1 10W-30 in a 2010 Kia Soul, and I thought it would be ‘okay’ because it was a full-syn 10W-30. It did the exact same thing, would not start below -25C.
I don’t use 10W-30 in the cold part of the winter anymore. I don’t know how people got going in the 1970’s when 10W-30 was the ‘winter’ grade of oil.
Later, I had Mobil 1 10W-30 in a 2010 Kia Soul, and I thought it would be ‘okay’ because it was a full-syn 10W-30. It did the exact same thing, would not start below -25C.
I don’t use 10W-30 in the cold part of the winter anymore. I don’t know how people got going in the 1970’s when 10W-30 was the ‘winter’ grade of oil.