I heard good things about Amsoil reducing oil consumption in vehicles such as mine from fellow vehicle owners. So I bought some Amsoil 10w-30, it has a yellow label, no other name associated with it. I just want to make sure that this is their full synthetic group 4 fluid. I never followed their fluids very much and see that they have different series, such as 2000 and 7500 and XL. Which series is reported to be a group 3 product ?. The stuff I bought is just labelled as synthetic 10w-30, also says turbo formulated. I know one of their 10w-30 oils has amazingly low NOACK numbers, hopefully this is the right stuff that I bought. At less than $10 a quart I thought it was pretty reasonable ( for our part of the world). Any info would be helpful. thanks