I have used Redline, Amsoil, Mobil 1, and Castrol synthetics in my cars - past history. I prefer Mobil 1 today, mainly because you can get it most anywhere.

The bottom line, in my opinion, is to use a good quality synthetic. Change the oil per the manufacturer's specification, and you probably get the most life out of your engine.

Modern oils are all pretty good today, so the secret to long engine life is changing the oil and filter - thus removing the dirt and grime from the engine in the process.

Synthetics cost more, and some may argue they are not worth the extra $$$, but I still use them. I have never had an engine failure in any of my regular cars, even after 200K miles.

My turbo charged Honda Civic (1985) - I blew up a few times, but it was not the oils fault. Something about not having a waste gate and running 30 psi caused it to melt the pistons.