Quote:
The short story.
For years Mobil pushed the superiority of Mobil 1, partually based on the use of Group IV base stocks.
Castrol sarted marketing Syntec as full synthetic although it was Group III.
Mobil 1 hauled Castrol before the BBB. Mobil lost and Castrol could advertise that Group III is synthetic.
Mobil continued to push Group IV superiority.
A Gas Chromotagraph test of two Mobil 1 products indicated that they were Group III.
Wildfire at bobistheoilguy.
Communication with Mobil obtained evasive answers.
Wildfire spreads.
Still only two samples with indication of Group III.
Wildfire spreads some more.
Comment: Mobil should be more forthcoming. Many at bobistheoilguy believe the sky is falling and Mobil 1 is now Group III although there is only thin evidence.
Read the volumes of posts over the last few months and figure it out for yourself.