octane booster

[David Mcintyre]

On Tue, 7 Jan 1997 gofast at ix.netcom.com wrote:

> Hi guys. I *think* I am running out of octane in my BMW 530i - I have high
> compression pistons, and the car is choking at high rpms. Have checked most
of
> the obvious things like fuel pressure, filter, etc.

I am willing to bet large sums of money that this is not the problem.
Have you read your owner's manual.  I know that BMW manuals specify the
minimum octane, and it's probably 92 for your car.

9.5:1 is not that high, and you can get away with 10:1 with 93 octane
in very simple engines without all the knock/retard/advance computers
that your car has.

I would suggest that you subscribe to the bmw-digest, and post your full
list of symptoms.  There are hundreds of 530 owners and mechanics that
will be anxious to help you.

Send administrative requests to bmw-digest-request at mailgate.wizvax.net

				-Dave