Date: Wed, 23 Jun 1999 01:12:36 GMT
From: "Robert L. Davis" <>
Subject: Re: SV: Saab Turbocharger durability

> A good fossil oil doesnt to the job worse than syntethic oil....(The fossil > oil lubricates better) Oil quality varies between brands, whether fossil or synthetic. As a general rule, however, synthetic not only lubricates better, but it oxidizes much more slowly at a given temperature, flows better in low temperatures, holds viscosity better in high temperatures, and manifests a higher solvency which translates into a cleaner engine. Because of the solvency and better high-temperature stability, sludge is all but eliminated. Whether or not you need it is another issue. If you have an air-cooled or turbocharged engine, it is advisable to use synthetic oil. In the latter case, its high-temp stability reduces coking which isn't good for anything. Whether you elect to spend the extra money is one thing, but the benefits are documented and undeniable.

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