Here is the current Synthetic Oil I am using:

 

Another really good Synthetic Oil: Joe Gibbs Driven FR20 which is 5W20.

The first 5W-20 synthetic performance motor oil formulated with Ultra High Viscosity Index base oils designed for high output Ford modular and Mopar engines. FR20 features a high zinc content to protect aggressive cam profiles, and the advanced synthetic formula delivers high temperature protection from viscosity breakdown. Not every high performance engine lives in a race car. High Performance engines can be found under the hood of modern muscle cars. These engines often have a double life. One day cruising the highway and the next tearing up a track. Engines like these need oil that can protect on the road, on the track and in the garage. Joe Gibbs Driven FR20 delivers enhanced film thickness as well as increased anti-wear additives for high output Ford Modular and small block Hemi engines.

This is a premium synthetic oil that can handle supercharged vehicles as well.

High Zinc Content - Higher level of Zinc (ZDP) delivers proper anti-wear protection for high output engines and flat-tappet camshafts

Extra Film Thickness - Advanced synthetic technology for greater film thickness under high temperatures and high loads

Thermal Stability - Defends against oil consumption and viscosity breakdown

FOR MORE STREET OILS FROM JOE GIBBS DRIVEN: http://www.drivenracingoil.com/dro/p...gine-oils.html

Found this great Video which explains there oil make up: http://www.youtube.com/watch?feature...v=lQ6NXXLZA3A#!

 

Video Comparison "POUR" @ -40 degrees. Conventional vs Amsoil Synthetic
To demonstrate this, we compared two different 5W-30 motor oils and see how they perform under very cold temperatures.
Take a look and learn more here: http://www.amsoil.com/about/syntheti...ventional.aspx