3923's are one range colder. colder = more fuel ? better for performance.
----- Original Message -----
From: "Jay & Dana" <jay&dana@telus.net>
To: "DML" <dakota-truck@dakota-truck.net>
Sent: Friday, February 20, 2004 6:49 PM
Subject: DML: Autolites & gas mileage
>
> I know the majority here on the DML use the Autolite 3923's but I'm
> wondering if anyone has experienced an increase or decrease in fuel
> mileage
> since switching over to these plugs from the stock ones? On my 97, 318 it
> seems the gas mileage has gone down slightly since using these plugs.
>
> Jay
>
>
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