Originally Posted By: Sam2000
Originally Posted By: A_Harman
I think Pennzoil classifies their GTL base stock as Grp III+.
What's the source of this "thought"?
I think it is in the replies they gave in the Pure Plus Q&A.
Nope, sorry. Here is the reply that Pennzoil gave:
PurePlus™ Base Oil is classified as an API Group III product. It is important to note there is no such category as an API Group III+ base oil, interested readers can download and check out a copy of API 1509 for the current official base oil definitions. PurePlus Base Oil is classified as API Group III base oil based on its molecular structure, but it exceeds the minimum requirements for API Group III base oil.
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