It doesn't get near that hot or cold in the Toronto area unless you're factoring humidex/wind chill. Note: dead things are immune.
Over the last three winters there was only 6 days where the temperature dropped below -18C / 0F. The average was -2C. The only blip was -26C overnight in 2016. That was the coldest day in 35 years. Hence, you could theoretically get away with using a 10W30 year round. More so with a synthetic if you wish to pay the premium.
Unlike yesteryear modern oils are well below the threshold of API's 60,000 m-pas cold pumping viscosity. Taking the 10W30 MRV @ -30C example:
PYB: 23,000
MS1000: 18,700
MS2000: 14,300
P Gold: 12,000
PP: 8,500
To conclude, 0W20 is not necessary unless you're taking trips north of Sudbury. Any flavour of 5W30 might be the best choice for yearly coverage.
Over the last three winters there was only 6 days where the temperature dropped below -18C / 0F. The average was -2C. The only blip was -26C overnight in 2016. That was the coldest day in 35 years. Hence, you could theoretically get away with using a 10W30 year round. More so with a synthetic if you wish to pay the premium.
Unlike yesteryear modern oils are well below the threshold of API's 60,000 m-pas cold pumping viscosity. Taking the 10W30 MRV @ -30C example:
PYB: 23,000
MS1000: 18,700
MS2000: 14,300
P Gold: 12,000
PP: 8,500
To conclude, 0W20 is not necessary unless you're taking trips north of Sudbury. Any flavour of 5W30 might be the best choice for yearly coverage.
