My 92 Volvo was 10% better MPG 87 vs 93, no ethanol. Ran several tanks of 87 on a consistent commute to arrive at that conclusion.
I gather premium only benefits cars designed to use it, so I have not tried it in the Ford. -Tim Now uses super unpremium aka diesel On Jul 22, 2011 4:33 PM, "Randy Bennell" <rbenn...@bennell.ca> wrote: On 22/07/2011 2:44 PM, Dieselhead wrote: > > > Regular here is 89 octane, and all the MB gassers I e... Anyone ever actually compare regular vs premium? I have heard people say for a long time, that some vehicles will get much better fuel economy running premium fuel. They claim that the increased mileage offsets the cost of higher priced fuel. I knew a fellow who drove a big old Caddie that swore his fuel mileage dropped dramatically when he used regular fuel. I have never tried to document any difference personally. I have always run the lowest octane that seemed to behave. My old Suburban used to ping pretty bad on regular so we ran midgrade for a long while. I wonder if one might find that a newer MB designed to run on premium fuel might suffer a significant drop in fuel economy if the computer adjusted things like timing to avoid knock. Randy _______________________________________ http://www.okiebenz.com For new and used parts go to www.o... _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
