Was running Mobil 1 10W-30 in my 3.8L V6 Camaro. Input = 5quarts 10W-30 with PF52 Long Filter Spec (used on the 4.3L V6) Output = 4.2quarts 10W-30... after draining the filter No spills. Now I run Valvoline Maxlife 10W-30: Input = 5quarts 10W-30 with PF52 Long Filter Spec Output = 5quarts to the brim!! Not to mention the engine is significantly quieter cold or warm, and my fuel economy has not changed (its still good). This is also on a 3,000 mile oil interval - which I might change in the future but for right now at $1.88/quart 3,000 miles is plenty cost effective for me.