High Temperature High Sheer (HTHS) for Penzoil Platinum High Mileage 5W-30.

Thanks. 3.1 to 3.2 would be decent. Does anyone know if pennzoil has a customer service email? Would be easiest to ask the question via email.
 
Thanks. 3.1 to 3.2 would be decent. Does anyone know if pennzoil has a customer service email? Would be easiest to ask the question via email.
On the Pennzoil website.

 
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