well...............for my own little experiment anyway.![]()
OK.......I was REALLY curious at WHAT difference is really made between all the grades of Gasoline......87, 89(E-10) and 91 around here.........one thing I can tell you around town.....not much............but towning a boat is another story.
OK.......it has taken me a couple months to do this but I have some very Similar comparison's now!!!!
in June I went to Burchard towing my boat Using 89(E-10) and I got around 12.2 mpg with it both down and back.....Full tank of gas to start out(in truck) & nothin more added/taken away in my boat either......its about a 200 mile round trip with some hills and few flat spots that work out well.........as long as you dont set the Cruise & "Help" the truck up/down hills it does a little better but I did this all three times.........then I went to 87 about 2 weeks later..........now with 91 and air temps/conditions about the same as it was in June I have some good comarisons.
87..............12.74
89(E-10).....12.23
91..............13.85
You be the judge?
Does running premuim pay for itself even with a $.20 differnce over reg 87??
E10 saves you another $.10 over 87 but is it really worth it to save .5 mpg???