Our new baby

What kind of oil do you put in your pocket rockets, and what difference does it have to your cars? I’ve been driving mine for 6 months now (not a daily driver) and it’s time for the first oil change, but I have no idea what kind of oil should I put. Thanks to everyone in advance. (Sorry for my bad english, not my first language) Drive safe!

We already test drive it and it was very smooth and we didn't see anything wrong with it, at least for our "non professional" eyes. We tried to negotiate but they only took off like few hundred bucks. We didn't know what to negotiate more so I'm posting here for people who had abarths. Please help me! I really like it, done my research but not sure what to look into it more to get a better pricing.