1953 imperial

["jsadowski" <jsadowski@xxxxxxx>]

In addition to loosening lots of old crud, they advise not to switch to synthetic oil in an old engine because its likely to cause leaks.

John

----- Original Message -----

From: dardal@xxxxxxxxxxxxxxx

To: mailing-list@xxxxxxxxxxxxxxxx

Sent: Sunday, June 01, 2003 4:33 PM

Subject: Re: IML: 1953 imperial

Aran is correct.  Back then, there were no detergent additives in oils, and
there is a good possibility that crud can get released back into circulation
once the strong additives of the synthetics start acting.  However, if the
engine has been recently rebuilt, a high viscocity synthetic can be used
safely.  Synthetics with various grades of viscoity are available.  I use 15w50
Mobil 1 on my 440's which has probably higher hot viscocity than the original
oil used in the 50's hemis.

D^2

Quoting "A. Foster" <monkeypuzzle1@xxxxxxx>:

> Denis;
>  Unless your engine has been torn down, boiled out, and rebuilt, I would use
> single weight conventional motor oil. Using synthetic on a 50 year old
> engine is asking for trouble. For one thing synthetic is too thin for the
> tolerances that are likely to be encountered. For another it might dissolve
> some coagulated crud in the block and block an oil galley causing real
> problems.



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