Join Date: Feb 2009
Location: Northeastern BC
From what I've read in a lot of different places, it really doesn't matter if you switch. That's a bit of an urban legend. As far as I know, there's nothing "magic" about synthetic oils. They're just basically a higher quality of oil. For my purposes, the main advantage is that synthetics have a little better cold weather performance. If I lived in a mild place like Vancouver, I probably wouldn't spend the extra $$$.
There are some good FAQs around on manufacturers's websites like Mobil and Castrol. Just google "synthetic oil FAQ".
If Princess Auto were a real girl, I'd ask her to marry me.