Interesting timing for this topic, because I've just finished doing some research on the whole synthetic vs. conventional motor oil thing. The family just got a new vehicle, so naturally I'm trying to do everything possible to make it purr nicely for years.
I'm not a car person, but most of the car people I've heard and read strongly recommend synthetic oil for most cars. I've learned that you should wait to switch to synthetic until after 5k-10k km (first or second oil change) if the car came with conventional oil from the factory.
Again, I think most car people will tell you that changing your oil is one of the easiest things out there if you learn how to do it from someone who knows... that said, I'd never try it, myself.
In terms of brand, I've heard very good things about Amsoil, Royal Purple, Shell Helix Ultra, Red Line and Mobil 1. Pick up something fully synthetic, whatever you choose.
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