Re: Synthetic Oil - Saab General Bulletin Board - Saabnet.com
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Re: Synthetic Oil
Posted by Les Lyne [Email] (more from Les Lyne) on Fri, 16 Feb 2001 12:36:35
In Reply to: Re: Synthetic Oil, REM in Seattle [Profile/Gallery]
, Fri, 16 Feb 2001 10:13:38
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Just curious . . .
"I use Mobil 1 10W-30 in my 1998 Saab 900SET and Mobil 15W-50 in my 1991 Alfa-Romeo Spider. I run my vehicles 5,000 miles between oil and filter changes as I do a lot of city driving."
Why the different weights? Is it because Alfas depend so much oil for cooling?
I've owned Alfas myself, and I used Pennzoil 20W-50 (petroleum-based). I've since come to the understanding that it's not good to use an oil with that wide a viscosity range, due to the polymers that must be added (and polymers don't provide lubrication). However I also understand that synthetics don't use these polymers.
An interesting site is:
http://www.unofficialbmw.com/all/misc/all_oilfaq.html
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