Possibly someone can explain what constitutes a true full synthetic motor oil.
Is Dexos1 really a full
synthetic ...or blended?
ACDelco dexos1 Full Synthetic Motor Oil | ACDelco
According to the links I posted it well exceeds all GL5 by great margins and includes better wear, less consumption & way better cold flow and aeration properties. Add in molybdenum and base 4 stocks, sound like a great oil but expensive.
Any of the approved Dexos 1 oil will meet the new GM specs.
See post 1 for the approved list of certified (royalty paid) brands of Dexos 1.