i can't stand that crackle noise on the highway at about 3 grand
i use 87 octane too cuz i can't affors any better
i noticed that if i put a quart of kerosene (yes ...kerosene) in my 22 gal
tank with the 87 octane, the noise is virtually eliminated. when i don't
put the kerosenne in, the noise comes back
with 93 the ping is minimal but with 94 (Sunoco) it is GONE
i prefer using 87 w/kerosene
I'm Broke and that is cheaper
----------
> From: Rader <rlr@bbt.com>
> To: Dakota Mailing List <dakota@ait.fredonia.edu>
> Subject: Back to the gas question...
> Date: Wednesday, February 19, 1997 11:14 AM
>
> Out of a desire not to start up another religious gasoline war,
> I haven't been posting any of these questions. Now it's to the point
> where they're really bugging me, so here goes. This is a '95 extended
> cab V8 with 5-speed and 3.55 SG rear end. Box stock; no headers, no
> catback, no K&N, nothing.
>
> 1. Following the owner's manual, I usually fill up with 87 octane
> and almost never have problems (as long as the gas is decent quality;
> I've gotten some tanks of pure crap before).
>
> 2. Starting some time in December, I started noticing pronounced
> pinging when I get on the throttle (since it's a 318 Magnum, I tend
> to get on it quite often ;). The pinging starts somewhere around
> 2500 RPM in second and/or third. I can sometimes get it to ping
> when applying full throttle on the freeway at 70+MPH as well.
>
> 3. This winter was the first winter where I'm using the Dakota as
> my daily driver. Previous winter I had no problem running 87 octane,
> but I wasn't driving the Dakota very often.
>
> 4. I've been experimenting with gas grades, as well as brands. I
> avoid _almost_ all pinging when filling with 89. I notice some brand
> differences as well, but less pronounced than grade differences.
>
> 5. Mileage differences are minimal when switching gas grades, but
> I tend to get 0.5 MPG more when I avoid pinging (stands to reason).
> During the non-winter months, I've experimented with 87 vs. 89
> octane, and experienced no appreciable mileage difference. Have not
> tried 93 octane (other than to correct tanks of bad gas; see #1), and
> don't foresee much if any mileage improvement. I might try out a
> couple of tanks of 93 just to satisfy my curiosity.
>
> Questions
>
> a. I believe that the winter-formula gasolines (which increase
> volatility) are the cause of my pinging. True or false?
>
> b. Has anyone else experienced similar gasoline issues during the
> winter?
>
> Thanks,
>
> Ron
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