One thing I'd add to Dick's comments is that a car burning oil that has
synthetic in the crankcase emits a distinct pungent odor. You can smell
the difference!
Jim
----- Original Message -----
From: "Sally or Dick Taylor" <tr6taylor@webtv.net>
To: "Mark Creamer" <mcreamer@cinci.rr.com>
Cc: <6pack@autox.team.net>
Sent: Monday, October 29, 2001 2:36 AM
Subject: Re: Puff o' smoke and a hi ho silver
> Mark---"Regular" motor oil has gone up several grades since our cars
> were built. This should mean that it is better than what engines
needed
> to perform and give long service when the cars were designed. Based on
> this, I personally wouldn't spend the extra dollars for the synthetic
> type, unless your engine is being exposed to kind of treatment that
> these oils were developed for. Some may say while they pay twice as
much
> per quart, but change the oil half as often, cost is a wash.
>
> Generally speaking, "smoke" out the tail pipe comes from any of three
> sources-- Water condensation, or steam (white), oil burning (blue),
> fuel or carbon (black). Some black smoke while using the choke is not
> unusual on startup. It should stop when the choke is returned to the
> 'in' position. The extra 500 rpm you're seeing suggests that
something's
> not returning to where it was. (Not necessarily a choke, but look here
> first).
>
> I don't think changing to the synthetic is part of the black smoke
> sighting.
>
> Dick
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