Synthetic oil change-over

wa8yxm wrote:
In my not very humble opinion calling an oil Synthetic, when it is really dino oil is false advertising,, Just like calling Survivor, or The Batchlor, Reality TV,,, About as real as Gilligan's Island they are.

I do agree, but the National Advertising Division (NAD) of the Council of Better Business Bureaus says that it's okay to do exactly that as a result of Mobil 1 taking Castrol to arboration for exactly that issue. Regretfully Mobil lost, and Castrol (an others) can sell dino (Group 3 oil) motor oil using the Synthetic description. The actual ruling use to be on line, but I can no longer find it. But this explains it better than anything I've read: http://www.opieoils.co.uk/pdfs/Beware-of-the-labelling.pdf