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Date: Fri, 08 Oct 1999 22:32:27 -0400
From: Four Weis <mweinopsamcom>
Subject: Re: Synthetic Oil

There is one thing I forgot the mention, based on the problem of lack of oil on the moving parts of a cold engine when it starts. Diesels have a pre-heater to make starting easier, so why can't you have an electric "pre-pump" to get the oil moving before you start the engine? Is it not worth the expense? Is it not worth the hassle of maintenance, more places to leak? Or, would it make engines last too long, thereby reducing the number of new cars sold because the engine wears out in the old car? Simon Watkins wrote: > I find it interesting that such a debate goes on over oil. I find it even > more interesting that there are such differences in the service intervals of > cars used in the States, and used in the UK and Europe. For instance, the > Saab 9-5 - Mine has a service interval of 12000 miles after the first 6000 > mile service. The first service comes early I guess because of the newness > of the car and the running in required, but after that - 12000 miles between > oil changes!!!! I'm also interested in the fact that I have seen nothing to > indicate that Saab's last any less time this side of the pond. Marketing > hype? Maybe. Modern oils and filters are magnitudes better than those of > only a few years ago, so extended service intervals are a definite and > practical reality. > > To fuel the debate though, I believe that synthetics are better for a car > primarily because of the reasons cited for startup from cold. For those > wondering whether Saab recommend the use of synthetic, they actually do sell > one now - expensive of course! > > Simon > > Four Weis <mweinopsamcom> wrote in message news:37FD5FA4.AF7A767Cnopsamcom... > > I have used synthetic oil in a Saab and a Volvo without any problems. > > This posting could start the almost religious debate about motor oil, > > again. I will put my two cents in and get out. I would agree that ONCE > > a normally aspirated car is running under normal ( not racing) > > conditions, any good quality motor oil will do. However, when an engine > > is started cold, there is little oil on most of the moving parts. The > > sooner you can get oil to these moving parts the less wear on the > > engine. I heard somewhere that 70% of engine wear comes at startup. > > Please don't hold this as an absolute truth, as I can't remember who > > said it. The synthetics seem to flow much better at lower temperatures, > > so it would seem logical that they would pump faster at startup. That > > is my reason for using synthetic oil. As for the added cost, I change > > the oil and filter at 5000 miles with the synthetic oil, as compared to > > every 3000 with regular oil. > > > > wrote: > > > > > A rep from SAAB is in Hong Kong next week (of course his > > > name is Rolf Lindtsrom) and they are inviting us in for a > > > service visit with a once-over by Rolf and offering a good > > > deal on an oil change with synthetic oil. My SAAB is a 94 > > > 2.3 900 non-turbo in good condition with about 31000km on > > > the clock. I asked the service manager if there would be any > > > problems going from regular oil to synthetic and he said > > > none. Correct? > >

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