[Shotimes] Another Stupid Question

[Kenneth Epperly]

Gorge remember when Sunoco would leave a blue tinted film in the tail pipe.

        Ken
----- Original Message ----- 
From: <krazgeo@comcast.net>
To: "Peter Maggiacomo" <gtsrider@yahoo.com>
Cc: <shotimes@autox.team.net>; "SHOTimes" <shotimes@autox.team.net>
Sent: Sunday, June 11, 2006 2:53 PM
Subject: Re: [Shotimes] Another Stupid Question


> -------------- Original message ----------------------
> From: Peter Maggiacomo <gtsrider@yahoo.com>
>> Are all Gen I and II engines dirty runners?
>> My tail pipes are black, while most other cars I see
>> in parking lots have a greyish color.
>
> First of all, there are no stupid questions, just stupid answers.
>
> Back when there was lead in gasoline, a proper air-fuel mixture left a 
> brownish gray deposit on the tailpipe, while a black deposit indicated too 
> rich a mixture.
>
> Today, there is no lead, so all pipe residue is black (or various shades 
> of it).  If there is relatively thick, loose black carbon in the pipe, 
> which you can easily rub out with your fingertip, the engine is running 
> rich.  If the residue is thin, and not much comes off on your finger, you 
> have a good mixture.
>
> George
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