Low oil pressure

O weight oil is used to get MPG up. It does flow faster in cold weather, BUT these engines are engineered to use this weight oil. VERY close tolerance in bearings. And the plastic intake is very useful, lighter for one, and it makes more power then aluminum, it stays cool. The rest of the plastic is there to reduce weight to get mandated MPG. I think OP could rebuild that engine but more then likely, it will last a long time as is. And one more thing, you do realize most new cars dont have a oil pressure gauge? I think people would be scared to see how low oil pressure is in these engines.