Re: 89 octane OK in 2.8L V6?

[Andrew Duane USG/PE <duane@zk3.dec.com>]

Hairy green toads from Mars made BOEING377@aol.com say:

> The manual says use only high octane gas (92 or higher).  I tried 89 and no
> knocking was detectable.  Am I getting less power or hurting fuel economy?  Is
> the knock sensor retarding the timing or does the car run fine on this lower
> octane?  I don't do hard acceleration normally, but even when I did I couldn't
> detect any knock or loss of power with a tank of 89 compared to perfornmace
> with 92 octane.  Comments?  Mark,  92 100S 86K

I weaned my '95 A6QW off the 93 octane months ago. Been running just
fine since then on 87. I used a couple of tankfuls of 89 in between
but that was OK, so I went on down to regular 87.

No knocking, no loss of milage, no detectable problems at all.
The manual in my car says 87 is OK, but the tank flap says 91
(or is it the other way around?). I suspect it is a goof from
translating european octane numbers to american ones.

-- 

Andrew L. Duane (JOT-7)			duane@zk3.dec.com
Digital Equipment Corporation		(603)-884-1294
110 Spit Brook Road
M/S ZKO3-3/U14
Nashua, NH    03062-2698

Only my cat shares my opinions, and she's too psychotic to express it