Not to start an oil war but I am sitting at 135000 and am running the 15W40 25000 mile intervals. I too use it in the other clunkers when I change it till it is all gone. It is still very good after running it that long so there is nothing wrong with using it up.

 

just picked up some penzoil 15w-40 for my first change anyone else use this and how do u like it?