Exactly. It's a waste to put in premium UNLESS your manual tells you to put it in. In modern cars it probably won't cause any damage to put in lower octane than recommended but you probably won't get full performance.
Levi On 1/4/07, Werner Fehlauer <[EMAIL PROTECTED]> wrote:
Au contrare - while most modern cars are under computer control so that when they sense "knocking", they can retard the spark accordingly so that the driver thinks all is OK, the engine does NOT run as efficiently as it can. Mileage and power suffer. A car that is designed with a high compression ratio that requires fuel that has good antiknock properties will perform better and more efficiently with the proper grade fuel. Now if you're talking about additives, just about all gasoline has enough of the needed "snake oil" additives to keep the fuel system clean and operating as designed. Its the engine and its high compression that requires the high octane stuff. Werner ----- Original Message ----- From: "Mike Canfield" <[EMAIL PROTECTED]> To: "Mercedes Discussion List" <mercedes@okiebenz.com> Sent: Thursday, January 04, 2007 2:34 PM Subject: Re: [MBZ] Gas vs. diesel prices? > Running hi grade gasoline in most modern EFI cars is a waste of money. If > it runs fine without pinging on 87 then there is no reason for a higher > octane. > > Mike _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
