tmrpro:
You should see an immediate improvement on the higher pressure.

I've been getting my gas from the Sam's Wholesale club. They're usually
5-7 cents per gallon cheaper than the cheapest other typical station.
I guess Costco, etc would be the same.
I've tried different stations at various prices and in my findings, they are
all about the same.

A couple of weeks ago was my first oil change at the dealer.
They put in the "regular" stuff. (Sorry forgot the brand).
Next time I'm going to request Mobil 1 or whatever the more knowlegable folks here can suggest.

I've never been one to take the "save the earth" cause but I have an interest in saving $$$ at the pump. If the air is a little cleaner then it is fine with me.

I paid extra for my car and expect a good return. It just so happed that my HCH is loaded with so many great interactive tools that I admit getting "Sucked in" a little if you will. Be careful or you may just get the bug too.
I think you and your car are on a good path for great MPG.
Steve

Efficient drivers do it better.
1003 miles a tank personal record. 74MPG calculated. HCH1 CVT