> All the discount chains get their fuel from one of the major
Hate to burst anybodies bubble but as long as the gasoline of a
designated grade meets the (R+M)/2 spec, it's the same stuff.
Were are dealing with a price sensitive commodity here.
BTW, try to find a test stand that can run the (R+M)/2 test.
The one I used was on it's last legs, and that was almost 50 years ago.