If it's API approved I am willing to bet it does not have enough zinc in it to be any good for it's claims.http://www.quakerstate.com/#/motor-oil/defy?gclid=CNWgkcyNirACFeJ9OgodQgK1Nw
I just ran across this.
Yes and no. Synthetic oil is suppose to be derived from chemical molecules that can come from any number of sources either vegetable or mineral. It doesn't matter where it comes from as long as its pure and standardized. It is the same as panning for gold.Synthetic oil isn't synthetic. It is regular oil processed so that all the molecules are the same size. There are polymers added and other things, but the oil is still oil only with uniform molecules.
Thanks for the information on that. It makes me wonder if they are the same then why is the Quaker State semi synthetic. The Pennzoil Platinum is group III.Here is a VOA of Defy-
Q State Defy 5w30
SAMPLE TAKEN 4\23\12
Pennzoil, Quaker State, Shell are all owned by Sopus Products
Looks to be the same oil, different bottle...
Info from BITOG, Blackstone labs
That does not mean it's 100% right. That how Mobil makes their base stock. Redline does not use that process at all.