On Dec 31, 2014 4:22 PM, "Dan Penoff via Mercedes" <mercedes@okiebenz.com> wrote: > > > Does "premium fuel only" really mean "premium fuel only"? > > The consensus over at Benzworld seems to be that the resulting drop in economy ends up making it a wash, and introduces the risk of damage to the catalytic converter and engine. That may be anecdotal, I haven't seen any proof.
On my 92 Volvo 940, a discrete knock sensor would compensate for the fuel grade, down to 87 octane or so. Mileage was close to 20% better for 93 versus 87, so I would do the calculation when I stopped at the pump. Most of the time premium was cheaper, but that was a long time ago. I don't know about Mercedes, just wanted to share my observation... Best, Tim _______________________________________ 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 All posts are the result of individual contributors and as such, those individuals are responsible for the content of the post. The list owner has no control over the content of the messages of each contributor.
