Originally Posted By: volk06
Originally Posted By: TiredTrucker
Originally Posted By: blackman777
Originally Posted By: tommygunn
supposedly just about every SN "dino" has at least some group III content as well.
Group III is not synthetic. Group III is still a "dino" oil. Synthetics do not begin until groups IV and V.
And group IV is made from ethylene gas extracted from natural gas, another carbon based source. Who cares whether Group III is a true synthetic or not. Heck, technically, lubes made from whale oil in the early 1800's still fit the TRUE classification of being "synthetics", but I sure wouldn't use them in my equipment.
And Group V is just a classification that includes everything that doesn't fit neatly into Groups I - IV. Man that is broad idea there.
I still us a good blend in my diesels... Schaeffer 700 15w40. A PAO Group IV and Group II+ blend. Does a great job at a good value on the wallet. My 2013 Silverado gets the Schaeffer 9003D 5w30 full synthetic... a PAO Group IV and Group III blend.
Cam you tell a fellow close bitog'r where you get your schaeffer's at?
A rep that lives about 15 miles from me in Central Iowa, Dan Dykema. He is out of Sully. His phone is 641-417-8146. This is his home page...
http://www.schaefferoilreps.com/dandykema/