Syn vs Reg.
An ongoing debate
I agree with the others to a point. I do use synthetics exclusively in all my cars. There is discussion of leakage due to the thinner texture(viscosity) of the synthetic(so I'm told). I have not encountered this on any of my cars. The reason I prefer it is simply a higher breakdown temp. 500deg vs about 300deg for normal oil. I must admit I'm still running original engines on the vettes and they run HOT. It's a matter of choice. Standard good quality oil will do the job just fine. On a high performance engine that gets worked, I would vote for synthetics on any year car.
And most of all, change at 3k and these engines will outlive us all.
Just my .02