As listed in my signature.
Since owning them, the two w/ DI engine have received nothing but full-synthetic, various brands which is dependent on what is the best deal at the time.
The two older ones, I've used Synthetic 75% of the time, the other 25% was semi-syn or "dino" if there was a deal I couldn't pass up. These cars I switch grade depending on ambient temp, for example I'll often use a 40 weight in summer, or an Xw-20 in winter, even though the car doesn't recommend it. Depends on what bargain I found and what I have on my shelf.