Isn't anyone using group I any more? (I suspect I might be)
Originally Posted By: MolaKule
As I stated in the White paper, finished motor oils are a mixture of different base oil Groups. I would suggest the following Labeling standards for the base oil percentages using only three categories: Automotive Full Synthetic Lubricant: 50% Group IV OR 50% GTL WITH the remaining 25% containing any combination of Group V components. Tolerance +, - 10% for improvements in base oil technology. Automotive Synthetic Blend: 40% of Group II WITH the remaining 35% containing any combination of Groups III, GTL, IV and V. Tolerance +, - 15% for improvements in base oil technology. Automotive Conventional: 70% Group II WITH the remaining 15% containing any combination of Groups III, GTL, IV and V. Tolerance +, - 20% for improvements in base oil technology.
Originally Posted By: fdcg27
Thanks for the detailed summary of how the various base oils are made along with their historical development... Also, many finished oils contain significant Grp IV content along with some Grp III. Should these oils be labeled as synthetics, blends or what? Can you see any potential for a more modern performance-based standard for finished oils in which any labeling related to basestocks would cease and only actual performance would matter?