Originally Posted By: JonfromCB
As a "tribologist" I'd expect you are familiar with US motor oil labeling laws. "full synthetic" is legal labelling for hydro-cracked group III in the US ...."Synthetic" is not....Note the addition of the word "full" You will not see the words "full synthetic" on any bottle of group IV or higher base oil.
As one example, you mentioned in a previous thread that the Spectro Platinum 4 was 100% PAO based and that is labelled as "full synthetic"
Some other oils include: Bel-Ray EXS Synthetic Ester 4T Engine Oil, Maxima V-Twin Full Synthetic Engine Oil, Motorex Pro 4 and Motorex Power Synt 4T, Redline Motorcycle Oil and Silkolene Pro 4.
I believe all of those oils state "full synthetic" or "fully synthetic" on their labels and they all appear to be PAO and ester base oil engine oils. At least from the data I could find quickly on them. I can't see any indication of group I, II or III as anything more than an additive carrier in those products.
I feel like my original questions may have been taken the wrong way though. I was just asking whether you were suggesting that
all synthetics in the US used group III or whether you were only referring to Rotella and some select others. Because there are a lot of "full synthetic" oils that are exactly as advertised.
I get the feeling we are just having miscommunication though, because I'm pretty sure we actually in agreement on this.