George_7.3IDI
Full Access Member
I'm not sure but I couldn't remember if it would be safe to run synthetic oil during the summer. I'm looking at running Valvoline Premium Blue Heavy Duty Diesel 5W40. Just wanted to make sure because being up here in Fairbanks, AK you pretty much have to run synthetic during the winter and if it is going to be ok to run synthetic during the summer then I could just switch straight over to synthetic. I have been running my truck with 15W40 non synthetic Valvoline and although it is definitely cheaper I think it would be easier to run synthetic year round and not have to worry about changing oil in between the winter and summer seasons.
Thanks
George
Thanks
George