Originally Posted By: UG_Passat
Originally Posted By: zpinch
Oops, yes I never meant to have Esters in there, they are Group V. Thanks.
You know what I mean by 'engineered'.
All oils, no matter the Group of the basestock are engineered
Well, chemically, true synthetics are tailer made to exacting specs from building blocks. Gp. III are processed from oil molecules that already exist, then hydro treated. Both are very good, but they are like comparing a tire for Formula 1 to the very best high performance street tire, they are just built different.