And a 5w-30 syn formulated with pao will be thin enough for most every cold climate on earth.
Very few places need an oil with a pour point of -55c,which iirc some boutique 5w-30s come close to.
Yes a 0w oil is nice to have but no way would I say it's required anywhere on earth.
A block heater can overcome a lot of cold at stsrt up,so if plugged in oil grade isn't really a consideration.
My charger heats the oil and engine when plugged in. Last year I saw -38c ambient and when I checked my oil temp prior to starting the engine the oil temp was -5c,my coolant temp was higher at 9c.
So at start up the oil easily pumped and hot air would blow from the vents in a few minutes.
My C3 when plugged in at -20 when I started it the coolant temp showed 75 on the gauge and within a minute or 2 was climbing.
So with these kinds of systems in use I'm less concerned about using a 0w.
If I had no block heater or was unable to plug in all winter I would certainly consider using one.
In all reality at -35 I'll bet that it takes the 5w a split second longer to reach to end of the oil circuit,which is insignificant in the real world,in my opinion.
Very few places need an oil with a pour point of -55c,which iirc some boutique 5w-30s come close to.
Yes a 0w oil is nice to have but no way would I say it's required anywhere on earth.
A block heater can overcome a lot of cold at stsrt up,so if plugged in oil grade isn't really a consideration.
My charger heats the oil and engine when plugged in. Last year I saw -38c ambient and when I checked my oil temp prior to starting the engine the oil temp was -5c,my coolant temp was higher at 9c.
So at start up the oil easily pumped and hot air would blow from the vents in a few minutes.
My C3 when plugged in at -20 when I started it the coolant temp showed 75 on the gauge and within a minute or 2 was climbing.
So with these kinds of systems in use I'm less concerned about using a 0w.
If I had no block heater or was unable to plug in all winter I would certainly consider using one.
In all reality at -35 I'll bet that it takes the 5w a split second longer to reach to end of the oil circuit,which is insignificant in the real world,in my opinion.