That is correct Sent from my iPhone
> On Jun 29, 2017, at 10:28 AM, Donald Snook via Mercedes > <mercedes@okiebenz.com> wrote: > > That is assuming the car was designed for premium. I think that if the > manufacturer just calls for 87 octane, there is no benefit to using premium. > Isn't that correct? > > Don Snook > > -----Original Message----- > From: Peter Frederick [mailto:psf...@earthlink.net] > Sent: Wednesday, June 28, 2017 5:27 PM > To: Mercedes Discussion List <mercedes@okiebenz.com> > Subject: Re: [MBZ] Fuel Mileage Premium v. Regular Experiment > > Typically there is a knock sensor on the engine, and ignition timing is > retarded when you get knock, may also richen the fuel. > > The difference can be 10% or more, depending on driving conditions and fuel, > but usually it's cheaper to use premium. > > Peter > > > _______________________________________ > http://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 > _______________________________________ http://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
