http://www.castrol.com/castrol/sectiongenericarticle.do?categoryId=9040510&contentId=7061133
I was on the Castrol website earlier and noticed that GTX SynBlend is being offered in a 0w-20. The MSDS was issued on 4/10 so I am guessing that this is a new product.
Obviously, 0w20 can be blended without needing to use mostly synthetic base stocks. So, buyers should not assume that all 0w-20s will always be full-synthetic.
I was on the Castrol website earlier and noticed that GTX SynBlend is being offered in a 0w-20. The MSDS was issued on 4/10 so I am guessing that this is a new product.
Obviously, 0w20 can be blended without needing to use mostly synthetic base stocks. So, buyers should not assume that all 0w-20s will always be full-synthetic.