AS long as it meets the SAE Grade and the API grade specified in your owner's manual you are good to go. The key is that you match the last number of the SAE grade ( i.e. 15W40) . That's the hot viscosity index number.
If cold weather starting is a problem, you might want to use a lower viscosity index for the low temperature (1.e. 5W40). I live i the Northern Rockies and I use 15W40 as specified in the owner's manual year round because I have block heaters on my equipment that allows for ez cold starts.