Originally Posted by Olas
Sponsorship deals do NOT determine viscosity selection - CLIMATE determines viscosity selection.
I may be wrong, but I understood the OP's post was a question of preference between Mobil 1 or Pennzoil 0w40, not the viscosity. Therefore the answers as to why a manufacturer prefers one brand over the other is spot on, it's all about the agreement between the two companies.
Sponsorship deals do NOT determine viscosity selection - CLIMATE determines viscosity selection.
I may be wrong, but I understood the OP's post was a question of preference between Mobil 1 or Pennzoil 0w40, not the viscosity. Therefore the answers as to why a manufacturer prefers one brand over the other is spot on, it's all about the agreement between the two companies.
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