RE: IML: Dirty Oil in my 440

[RandalPark@xxxxxxx]

This is absolutely true, but if it turns black suddenly, right after it is changed, it usually is a sign of another problem. The stuff in the bottom of the pan doesn't travel around that fast, although it will over time.

Instant black oil is caused by crank case fumes(blow by). Two critical things to check for is excessively rich fuel mixture, and a dirty or malfunctioning crank case ventilation system. In free breathing engines, which a '67 Imperial is not, the filler cap breather and draft tube need to be checked or cleaned. In positive crankcase ventilated cars ('67 Imperial is this) the system needs to be checked.

If these things check out okay, and the change from clean to black is somewhat gradual, then there is not much to worry about. 

Paul W.

In an email dated 10/5/2005 5:01:39 am GMT Daylight time, "Dick Benjamin" <dickb@xxxxxxxxx> writes:

>There is no reason to be concerned that your oil looks black. ?Modern oils
>have additives that hold contaminants in suspension, making the oil turn
>black pretty quickly. If you are maintaining your engine in accordance with
>the recommended intervals, including changing the oil filter at least every
>other oil change, there is no problem with the oil looking dirty. ?Also, it
>is important that you maintain the cooling system properly, so that the
>temperature of the engine comes up to 180 fairly quickly, and that you avoid
>short trips.
>
> 
>
>Dick Benjamin
>
> 
>
> ?_____ ?
>
>From: mailing-list-owner@xxxxxxxxxxxxxxxx
>[mailto:mailing-list-owner@xxxxxxxxxxxxxxxx] On Behalf Of
>DONALDDICKINSOND@xxxxxx
>Sent: Monday, May 09, 2005 12:50 PM
>To: mailing-list@xxxxxxxxxxxxxxxx
>Subject: IML: Dirty Oil in my 440
>
> 
>
>Is there a reliable and safe way I can clean out my 440? ?I have been
>changing my oil every 1000 (or less) miles but I still have dirty oil on my
>dip stick. ?Is this normal, or is there a solution out there?
>
>
>Don Dickinson
>Prospect, KY 
>
>1955 Imperial Newport, Canyon Tan and Desert Sand
>1967 Imperial Custom Convertible, Ivory and Burgundy
>
>


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