We've gotten that for years, esp. on flat ground with a low speed
limit--Oregon, Washington, BC, Alberta, etc.--and lots
of speed traps. I thought I'd get better with the 3.54 rearend, but it didn't
change mileage much. This as gas
formulations have changed drastically. We got a tank of 100% premium (no
alcohol) in OR; the gas looked and smelled
completely different than the typical gasahol--it had a greenish tint, of all
things--but I didn't notice any change in
performance. We only got one tank so really couldn't make a mileage comparison.
What really surprises me is oil consumption (read: leaked) has gone down over
the years. Used to lose a quart every
1,500miles on the highway; this trip I used less than 2 qts. in 4K miles. The
PCV valve seems to help a lot and, of
course, as Gary has pointed out the scroll slinger works better on the highway.
Bob
On 6/9/2011 9:45 PM, Alan Seigrist wrote:
> Bob -
>
> 23 mpg in a BJ8 is pretty impressive. When I had a high compression Mk 1
> motor in my BJ8, I would get 22 all the time
> on the highway. But then I found and rebuilt a BJ8 motor and set it up to
> std spec. At first I'd get maybe 18, but
> over time maybe the best I could do was 20. The plane Jane BN1 I have, on
> the other hand, can typically do 25+.
>
> Cheers,
>
> Alan
>
>
>
>
--
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Bob Spidell San Jose, CA bspidell at comcast.net
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