Castrol's new Full Synthetic oil : Castrol Edge !
 

I just saw this today :P

BP's test showing that it protects engines 8 times better than Mobil1 5w-30 :P

http://www.castroledgeusa.com

Hmm, its funny that Im looking at their MSDS, on the composition ingredientsm it just saids Based Oil - Highly Refined. 90-90%.

Another Group III knock off like their Syntec line ?(except for 0w30 grade)

Many, if not all, the Castrol synthetics are not pure synthetic.

BP Testing... owners of Castrol.