hey guys - long time lurker here and just decided to join because of this jug of 15w40 supertech oil that i bought for my '68 El Camino. it has an HLPA date/time stamping on it just like the ones on my quarts of penzoil platinum. im just wondering if this indicates that it is a sopus product? TIA and i hope to become a full fleged member here soon and to be able to chat with you guys on the other forums.