This is from a couple of years ago. No extended highway miles on this oil. Car sees under 7K miles per year lately. Suprisingly they only suggest I go to 3K miles on the next change. After a longtime M1 user, I'm trying PP 10w-30 on my next change (which will be tonight). I use Nissan filters. ps. is there an easier way of unloading this than Image Shack?