Hi there, I own a 1986 BMW 325e and am moving up to Chicago from down south. Was previously using 20w50 all year round due to the temps.
Can I get away with 20w50 year round in Chicago or is a 15w40 more appropriate? Will be using Brad Penn Partial Synthetic oil. This car is a 2nd vehicle/not a daily driver and would not be driven regularly in the winter, only when weather permits.
I really do not want to switch between oil viscosities based on time of year so wanted everyone's opinion on what to run year round. Thanks
Can I get away with 20w50 year round in Chicago or is a 15w40 more appropriate? Will be using Brad Penn Partial Synthetic oil. This car is a 2nd vehicle/not a daily driver and would not be driven regularly in the winter, only when weather permits.
I really do not want to switch between oil viscosities based on time of year so wanted everyone's opinion on what to run year round. Thanks