This oil may be the steal of the year if what I am reading is true. It says on the bottle that the 5w-30 is Hydrocracked, now does that mean that it is a syn blend? The 5w-20 says blend on the front but the 30wt does not, is that significant or not? Also would the 10w-30 be Hydrocracked as well since it does not say so? One other thing, how would the 5w-30 hold up in use as in shearing down and summer weather in NC? At $1.40 a qt it is a steal.