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960 octane survey 900

posted by  someone claiming to be beemer1 on  Thu Jan 15 09:50 CST 2004 [RELATED]

In the winter, I use a blend of 87 and 89 and she runs and starts fine. I live at sea level and the roads here in Vancouver are so congested there is little opportunity to put the foot down and use the horsepower at the top end of the specrum where high octain is necessary.
Milage in the colder weather has dropped to 20mpg Can, vs 23 in the summer when I run 89 to 91 due to the hotter weather. If I am going for a freeway trip esp in the mountains, then I run 94 octain and it does seem to have more power and I can actually break 30mpg Can which is not bad for a 3500lb car with an automatic.

Interestingly, when I visited Germany,where they all dive really fast, everyone uses 91 to 94 octain as they say their motors last longer as the spark is hotter and fewer deposits are left inside the motor!!






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