[DML] Re: Delorean Fuel

["David Teitelbaum" <jtrealty@xxxxxxxxxxx>]

Although it is similar it is not the same as the Delorean engine. The
compression ratio may be different. The ratios in the transmission and
final drive may also be different. The timing and advance is probably
different too. All these things affect the fuel requirements and the
octane rating. When in doubt go by the manufacturer's recomondations.
The owner's manual should be correct for the country it is sold in so
if you have an American import the manual is probably telling you to
use the octane rating you will see on the pump. Another great source
for information is a servicing dealer. Go to a Volvo dealer and talk
to the service manager. He will tell you right away what gas to use
and what happens if you don't. Do not try to apply what you see here
about Deloreans and think it will fit your Volvo. In general if you
require 91 octane you can get a way with less if it isn't too hot and
you don't do it often and you drive the car easy. For more frequent
use you will have to detune the car (retard the timing). This will
cause the fuel consumption to increase and the emissions. You may also
have to change the spark plugs (colder).
David Teitelbaum
vin 10757


--- In dmcnews@xxxxxxxxxxxxxxx, Nathan Robinson <nathanrobinson@xxxx>
wrote:
> 
> I kinda hate to bring up the whole Volvo/DMC PRV-6 thing agian... but
> I have a question about the fuel used in said engine, as there are
> some very knowledgable people on this list.
> 
> As I have said earlier, I have a 1980 Volvo 264 GLE (close enough of
> the same PRV-6 engine.)
> 
> Now. My manufacturers book states to use 91 octane, however it doesn't
> specify as to which continent. Would I presume this to be the European
> octane rating? There is a significant difference in price, so I'm
> somewhat interested if it would be considered safe to run 87 Oct. in
> the PRV-6 engine.
> 
> To my knowledge, I do not have a knock sensor in the engine, so I am a
> little weary , and have always run 91+  Oct. in my car, consequently
> making fillups very expensive.
> 
> What say ye?
> 
> ~Nathan








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