Yes, that is what I was getting at. Synthetic Oil reduces friction.
From another website: http://www.allpar.com/eek/synthetic.html
Roger Crawford wrote: Synthetic oil has a better shear capability, better cling, and [better resistance to] thermal breakdown, an issue in a daily driver.
Dan Stern added: Other [advantages] include much lower pour point, much less viscosity change over time, and flat-out better lubricity. All of these are quite advantageous indeed--even in daily drivers. That lower pour point is particularly good--it means that oil gets where it needs to be much more rapidly after a cold start, especially in very cold weather. ... What you refer to as "thermal breakdown" manifests itself as sludge and that tarlike goo that comes out of your crankcase every 3k miles. It happens on daily drivers! If you're not driving in conditions that let you take advantage of the lower pour point of synthetic oil, then you're most likely driving in conditions that let you take advantage of the resistance to thermal breakdown.
The additives in oil reduce have a limited life, thus waiting longer between changes has disadvantages because the additives lose their effectiveness
Synthetic by design is less prone to breakdown, and does not need the quantity of additives necessary to make dino juice an "effective" oil. Synthetic is much less prone to coking, and less prone to varnish than conventional oil.
Dan Stern wrote, “Oil additives do not deteriorate over time--only over usage. Some modes of usage are harder on oil than others. Lots of short trips put lots of water and acid, etc. in the oil, and things never get hot enough to boil off these contaminants. That's why you hear to change the oil every x,000 miles or x months--because if you're not driving x,000 miles over a period of x months, you're making this kind of short-trip contamination.”