Date: Sun, 7 Feb 1999 12:03:09 -0500 From: "Jeff Borneman" <jbornemannopsamarrier.com> Subject: Re: 5W50 synthetic oil grade
the following came from the saabusa web site: "As long as the oil meets the API ratings as described in the owner's manual, and the oil changes are performed at Saab's recommended intervals, synthetic oil should be fine as an engine oil. However, the bonding properties of synthetic oils can be detrimental to the synchronizers of the transmission, therefore synthetic oil should not be used in the gear box. "