I'm trying to find more information on the Napa full synthetic oils. I was told by the local Napa it is made by Valvoline. Is this oil the same as Valvoline or made by Valvoline to Napa's specs? And, is it good oil? I've also been told the Napa oil is not good enough for turbos (Ford 3.5L Ecoboost Transit van in my case). Can't elaborate on that other than it breaks down quicker due to the higher temps. With that, I don't run this motor hard. Mainly highway use and I pretty much baby it and drive conservatively. Oil changes every 5000 miles. Is there better oil I should be using? Thanks for any info.