I see alot of people post that they run a higher viscosity oil in the sumer months. Like 5w20 in winter then 5w30 or 10w30 in summer. I understand that the higher weight oil can provide better protection but isn't that because it is a bit thicker (more viscous) at operating temps? I guess what I'm asking is if a 5w20 might run a motor a smidge cooler compared to a 5w30? Or do I have this backwards? Seems like the less resistance the motor has on it the cooler it'd run. Wouldn't a more viscous oil be harder to cool down too? And shouldn't a motor run about the same temp in cold and hot weather with the same weight oil?
When I used to go to the oil change shop they would always tell me I wanted 5w30 in summer for my van that is spec'd for 5w20. So I'd run the 5w30 and switch back to 5w20 when it started getting cold. I just started changing my own oil agian last summer and did use 5w30 but then went to 0w20 in november for the cold weather. Also, would a Xw20 get to operating temps quicker than a Xw30?
If you guys can clear up my confusion I would greatly appreciate it!
When I used to go to the oil change shop they would always tell me I wanted 5w30 in summer for my van that is spec'd for 5w20. So I'd run the 5w30 and switch back to 5w20 when it started getting cold. I just started changing my own oil agian last summer and did use 5w30 but then went to 0w20 in november for the cold weather. Also, would a Xw20 get to operating temps quicker than a Xw30?
If you guys can clear up my confusion I would greatly appreciate it!