I asked this before, but didnt get a straight answer.
Whats the point of running a thicker running weight in extreme heat? We see here that (some) Australians and folks in the Middle East like a 50 or 60 weight oil. Wouldn't the radiator keep oil temperature somewhat in check and prevent any oil related failures? I would also think an oil cooler would be a standard option for vehicles in these regions. We also see engines that spec a much thicker weight in Europe and the other mentioned regions while the identical US version will take a 20 or 30 weight oil. (It has been mentioned here that a European car's severe use yields a thicker oil.. high autobahn speeds for example?)
I don't understand the reason behind any of this. In the US, thin seems to be in while other places are still using a thicker oil.
Whats the point of running a thicker running weight in extreme heat? We see here that (some) Australians and folks in the Middle East like a 50 or 60 weight oil. Wouldn't the radiator keep oil temperature somewhat in check and prevent any oil related failures? I would also think an oil cooler would be a standard option for vehicles in these regions. We also see engines that spec a much thicker weight in Europe and the other mentioned regions while the identical US version will take a 20 or 30 weight oil. (It has been mentioned here that a European car's severe use yields a thicker oil.. high autobahn speeds for example?)
I don't understand the reason behind any of this. In the US, thin seems to be in while other places are still using a thicker oil.