My pessimism got the best of me... I've recently saw a brand name "Juice Cocktail" which had a label stating that it had less than 10% real juice - this means that it could contain almost NO real juice and be correct (less than 10% real juice). You know where I'm going - it is quite possible that synthetic blend oil could be 99% regular or conventional (dino) oil.... Are there any specs for synthetic blend oil or is this a marketing gimmick? Comments??