Well, I just got off the phone with someone at the Mobil tech number. He didn't sound like the most knowledgable person I've ever talked with, but he said flat out that NONE of the Mobil 1 SuperSyn grades use VI improvers.
I searched the Mobil 1 site in vain for an e-mail address to contact them for tech questions, since I'd like to follow up on this. Some of you have mentioned e-mailing Mobil and getting responses, so can you post that e-mail address or send me a PM with it?
I searched the Mobil 1 site in vain for an e-mail address to contact them for tech questions, since I'd like to follow up on this. Some of you have mentioned e-mailing Mobil and getting responses, so can you post that e-mail address or send me a PM with it?