Some will take this as me unjustly defending Mobil 1. It's not that at all. I only want things to be known for what they are. The cliche' is "I seek the truth." When "you know who" announced that some M1 EP oils had Group 3 in it, he also announced that they had alkylated napthalenes and polyolesters (small %). "You know who" said that his equipment could not detect very large molecules such as very high viscosity PAO basestocks such as Supersyn. These are used on small percentages in M1 Supersyn oils as correction fluids. Most have forgot the last three facts and have focused only on the negative: the Group 3 content. I too wish that all M1 oils had only Groups 4 and 5 basestocks. But I'm concerned to see many people imply that oils like Pennzoil Platinum are equal to M1 "because they both have Group 3 in them". That's silly reasoning because it ignores the contribution of other baestocks in the oils and of course the additives. We don't know what PP has in it other than Group 3 so it's a big question mark. Esters do have their downsides, some of which are strong downsides. A shock to some will be that esters can allow more wear to occur than other basestocks. Alkylated napthalenes' downside is low viscosity index but that's not that big of a deal and its benefits outweigh that downside.
With all that said, enjoy the paper on alkylated napthalenes!
http://www.univar.co.uk/downloads/King_Industries_Alk_Naph.pdf
With all that said, enjoy the paper on alkylated napthalenes!
http://www.univar.co.uk/downloads/King_Industries_Alk_Naph.pdf