On Jun 16, 1:38pm, Joseph Burlein wrote:
> The car was originally made to run on 99/100 octane.
Ahhh, but the method for reporting octane numbers changed some
years ago. There are two methods for measuring octane rating,
research and motor. One gives about a ten point or so higher
rating than the other (and I can never remember which is which).
This 99/100 requirement is for that higher rating; the new method
that is posted on gas pumps in the US is an average of the research
and motor ratings, and is about 5 points lower. So, susbstitute
about 93 octane for the above number using current octane ratings.
Of course, if the engine is modified for higher compression, you
mayy actually need that extra octane...
> The only way to get
> that octane is to buy 100 low lead from an a local small airport. Of
> course, that gets expensive fast if you are driving it every day! Others
> may agrue, but put in the best (ie: highest octane) gas you can buy.
A good grade of premium fuel should be fine for a stock engine.
John Lye
rjl6n@virginia.EDU
http://avery.med.virginia.edu/~rjl6n/homepage.htm
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