Do you drive a 2011 or later Saab?

If so are you using the correct oil? All GM cars produced Model Year 2011 or later should be using Dexos 2 oil. Failure to use the correct could affect warranty, if there were any Saabs still in warranty.

The number of Dexos 2 oils is limited so you may have to look around to find one. Google Dexos 2 and you should be able to find which oils are approved as Dexos 2.