I have always used the 95 octane, since this is closest to the 87/91. No troubles at all!
Best wishes Stian Birkeland NORWAY
From: "robert parker" <roberthparker@xxxx>
Rob, Fuel octane in the U.S. is calculated using the formula (R+M)Squared/2. I don't know how it is calculated in Europe. It is no doubt different, as the European version of the owner's recommends a different octane rating. Drive Stainless Robert VIN 6924
From: "Rob van der Veer" <rob.van.der.veer@xxxx> Here in Holland, the only fuels we can get are 95 and 98 octane; this seems a huge difference. Maybe they use a different formula over here..
Rob.
> Yep, I've had that discussion before... The 91 is the "anti-knock index" > that is recommended for the 87 octane. I talked to a fellow in the Texaco > office about the Octane vs. anti-knock index. Octane rating is the > comparison of volatility of a particular grade of fuel to the volatility of > the 8-carbon, single-bond chain "Octane". It is derived from a formula of > (R+M)Squared/2, which is used in the U.S. The DMC is a low compression > engine, thus the lack of need for a higher octane rating. Check the manual > again.(U.S. version).